Add a number of argument groups to organize the help output

[ianmcorvidae]

Largely just rearranges, but I did also update a couple of argument descriptions, metavars, that sort of thing. The help output with these changes:

usage: meshtastic [-h | --version | --support] [--port [PORT] | --host [HOST] | --ble [BLE]] [--ble-scan] [--dest !xxxxxxxx] [--ch-index CH_INDEX]
                  [--configure CONFIGURE] [--export-config] [--get GET] [--set SET SET] [--begin-edit] [--commit-edit] [--get-canned-message]
                  [--set-canned-message SET_CANNED_MESSAGE] [--get-ringtone] [--set-ringtone SET_RINGTONE] [--ch-vlongslow] [--ch-longslow] [--ch-longfast]
                  [--ch-medslow] [--ch-medfast] [--ch-shortslow] [--ch-shortfast] [--set-owner SET_OWNER] [--set-owner-short SET_OWNER_SHORT] [--set-ham SET_HAM]
                  [--seturl SETURL] [--setalt SETALT] [--setlat SETLAT] [--setlon SETLON] [--remove-position] [--pos-fields [POS_FIELDS ...]] [--ch-add CH_ADD]
                  [--ch-del] [--ch-set CH_SET CH_SET] [--channel-fetch-attempts CHANNEL_FETCH_ATTEMPTS] [--qr] [--qr-all] [--ch-enable] [--ch-disable] [--info]
                  [--nodes] [--sendtext SENDTEXT] [--traceroute TRACEROUTE] [--request-telemetry] [--request-position] [--reply]
                  [--reboot | --reboot-ota | --enter-dfu | --shutdown | --device-metadata | --factory-reset | --factory-reset-device | --remove-node !xxxxxxxx | --reset-nodedb | --set-time [TIMESTAMP]]
                  [--seriallog [LOG_DESTINATION]] [--ack] [--timeout SECONDS] [--no-nodes] [--debug] [--test] [--wait-to-disconnect [SECONDS]] [--noproto]
                  [--listen] [--no-time] [--power-riden POWER_RIDEN | --power-ppk2-meter | --power-ppk2-supply | --power-sim] [--power-voltage POWER_VOLTAGE]
                  [--power-stress] [--power-wait] [--slog [SLOG]] [--gpio-wrb GPIO_WRB GPIO_WRB] [--gpio-rd GPIO_RD] [--gpio-watch GPIO_WATCH] [--tunnel]
                  [--subnet TUNNEL_NET]

Help:
  -h, --help            show this help message and exit
  --version             show program's version number and exit
  --support             Show support info (useful when troubleshooting an issue)

Connection:
  Optional arguments that specify how to connect to a Meshtastic device.

  --port [PORT], --serial [PORT], -s [PORT]
                        The port of the device to connect to using serial, e.g. /dev/ttyUSB0. (defaults to trying to detect a port)
  --host [HOST], --tcp [HOST], -t [HOST]
                        Connect to a device using TCP, optionally passing hostname or IP address to use. (defaults to 'localhost')
  --ble [BLE], -b [BLE]
                        Connect to a BLE device, optionally specifying a device name (defaults to 'any')
  --ble-scan            Scan for Meshtastic BLE devices that may be available to connect to

Selection:
  Arguments that select channels to use, destination nodes, etc.

  --dest !xxxxxxxx      The destination node id for any sent commands, if not set '^all' or '^local' is assumed as appropriate
  --ch-index CH_INDEX   Set the specified channel index for channel-specific commands. Channels start at 0 (0 is the PRIMARY channel).

Import/Export:
  Arguments that concern importing and exporting configuration of Meshtastic devices

  --configure CONFIGURE
                        Specify a path to a yaml(.yml) file containing the desired settings for the connected device.
  --export-config       Export the configuration in yaml(.yml) format.

Configuration:
  Arguments that concern general configuration of Meshtastic devices

  --get GET             Get a preferences field. Use an invalid field such as '0' to get a list of all fields. Can use either snake_case or camelCase format.
                        (ex: 'ls_secs' or 'lsSecs')
  --set SET SET         Set a preferences field. Can use either snake_case or camelCase format. (ex: 'ls_secs' or 'lsSecs')
  --begin-edit          Tell the node to open a transaction to edit settings
  --commit-edit         Tell the node to commit open settings transaction
  --get-canned-message  Show the canned message plugin message
  --set-canned-message SET_CANNED_MESSAGE
                        Set the canned messages plugin message (up to 200 characters).
  --get-ringtone        Show the stored ringtone
  --set-ringtone SET_RINGTONE
                        Set the Notification Ringtone (up to 230 characters).
  --ch-vlongslow        Change to the very long-range and slow modem preset
  --ch-longslow         Change to the long-range and slow modem preset
  --ch-longfast         Change to the long-range and fast modem preset
  --ch-medslow          Change to the med-range and slow modem preset
  --ch-medfast          Change to the med-range and fast modem preset
  --ch-shortslow        Change to the short-range and slow modem preset
  --ch-shortfast        Change to the short-range and fast modem preset
  --set-owner SET_OWNER
                        Set device owner name
  --set-owner-short SET_OWNER_SHORT
                        Set device owner short name
  --set-ham SET_HAM     Set licensed Ham ID and turn off encryption
  --seturl SETURL       Set a channel URL

Position Configuration:
  Arguments that modify fixed position and other position-related configuration.

  --setalt SETALT       Set device altitude in meters (allows use without GPS), and enable fixed position. When providing positions with `--setlat`, `--setlon`,
                        and `--setalt`, missing values will be set to 0.
  --setlat SETLAT       Set device latitude (allows use without GPS), and enable fixed position. Accepts a decimal value or an integer premultiplied by 1e7. When
                        providing positions with `--setlat`, `--setlon`, and `--setalt`, missing values will be set to 0.
  --setlon SETLON       Set device longitude (allows use without GPS), and enable fixed position. Accepts a decimal value or an integer premultiplied by 1e7.
                        When providing positions with `--setlat`, `--setlon`, and `--setalt`, missing values will be set to 0.
  --remove-position     Clear any existing fixed position and disable fixed position.
  --pos-fields [POS_FIELDS ...]
                        Specify fields to send when sending a position. Use no argument for a list of valid values. Can pass multiple values as a space separated
                        list like this: '--pos-fields ALTITUDE HEADING SPEED'

Channel Configuration:
  Arguments that concern configuration of channels

  --ch-add CH_ADD       Add a secondary channel, you must specify a channel name
  --ch-del              Delete the ch-index channel
  --ch-set CH_SET CH_SET
                        Set a channel parameter. To see channel settings available:'--ch-set all all --ch-index 0'. Can set the 'psk' using this command. To
                        disable encryption on primary channel:'--ch-set psk none --ch-index 0'. To set encryption with a new random key on second channel:'--ch-
                        set psk random --ch-index 1'. To set encryption back to the default:'--ch-set psk default --ch-index 0'. To set encryption with your own
                        key: '--ch-set psk 0x1a1a1a1a2b2b2b2b1a1a1a1a2b2b2b2b1a1a1a1a2b2b2b2b1a1a1a1a2b2b2b2b --ch-index 0'.
  --channel-fetch-attempts CHANNEL_FETCH_ATTEMPTS
                        Attempt to retrieve channel settings for --ch-set this many times before giving up. Default 3.
  --qr                  Display a QR code for the node's primary channel (or all channels with --qr-all). Also shows the shareable channel URL.
  --qr-all              Display a QR code and URL for all of the node's channels.
  --ch-enable           Enable the specified channel. Use --ch-add instead whenever possible.
  --ch-disable          Disable the specified channel Use --ch-del instead whenever possible.

Local Actions:
  Arguments that take actions or request information from the local node only.

  --info                Read and display the radio config information
  --nodes               Print Node List in a pretty formatted table

Remote Actions:
  Arguments that take actions or request information from either the local node or remote nodes via the mesh.

  --sendtext SENDTEXT   Send a text message. Can specify a destination '--dest' and/or channel index '--ch-index'.
  --traceroute TRACEROUTE
                        Traceroute from connected node to a destination. You need pass the destination ID as argument, like this: '--traceroute !ba4bf9d0' Only
                        nodes that have the encryption key can be traced.
  --request-telemetry   Request telemetry from a node. You need to pass the destination ID as argument with '--dest'. For repeaters, the nodeNum is required.
  --request-position    Request the position from a node. You need to pass the destination ID as an argument with '--dest'. For repeaters, the nodeNum is
                        required.
  --reply               Reply to received messages

Remote Admin Actions:
  Arguments that interact with local node or remote nodes via the mesh, requiring admin access.

  --reboot              Tell the destination node to reboot
  --reboot-ota          Tell the destination node to reboot into factory firmware (ESP32)
  --enter-dfu           Tell the destination node to enter DFU mode (NRF52)
  --shutdown            Tell the destination node to shutdown
  --device-metadata     Get the device metadata from the node
  --factory-reset, --factory-reset-config
                        Tell the destination node to install the default config, preserving BLE bonds & PKI keys
  --factory-reset-device
                        Tell the destination node to install the default config and clear BLE bonds & PKI keys
  --remove-node !xxxxxxxx
                        Tell the destination node to remove a specific node from its DB, by node number or ID
  --reset-nodedb        Tell the destination node to clear its list of nodes
  --set-time [TIMESTAMP]
                        Set the time to the provided unix epoch timestamp, or the system's current time if omitted or 0.

Miscellaneous arguments:
  --seriallog [LOG_DESTINATION]
                        Log device serial output to either 'none' or a filename to append to. Defaults to 'stdout' if no filename specified.
  --ack                 Use in combination with compatible actions (e.g. --sendtext) to wait for an acknowledgment.
  --timeout SECONDS     How long to wait for replies. Default 300s.
  --no-nodes            Request that the node not send node info to the client. Will break things that depend on the nodedb, but will speed up startup. Requires
                        2.3.11+ firmware.
  --debug               Show API library debug log messages
  --test                Run stress test against all connected Meshtastic devices
  --wait-to-disconnect [SECONDS]
                        How many seconds to wait before disconnecting from the device.
  --noproto             Don't start the API, just function as a dumb serial terminal.
  --listen              Just stay open and listen to the protobuf stream. Enables debug logging.
  --no-time             Deprecated. Retained for backwards compatibility in scripts, but is a no-op.

Power Testing:
  Options for power testing/logging.

  --power-riden POWER_RIDEN
                        Talk to a Riden power-supply. You must specify the device path, i.e. /dev/ttyUSBxxx
  --power-ppk2-meter    Talk to a Nordic Power Profiler Kit 2 (in meter mode)
  --power-ppk2-supply   Talk to a Nordic Power Profiler Kit 2 (in supply mode)
  --power-sim           Use a simulated power meter (for development)
  --power-voltage POWER_VOLTAGE
                        Set the specified voltage on the power-supply. Be VERY careful, you can burn things up.
  --power-stress        Perform power monitor stress testing, to capture a power consumption profile for the device (also requires --power-mon)
  --power-wait          Prompt the user to wait for device reset before looking for device serial ports (some boards kill power to USB serial port)
  --slog [SLOG]         Store structured-logs (slogs) for this run, optionally you can specifiy a destination directory

Remote Hardware:
  Arguments related to the Remote Hardware module

  --gpio-wrb GPIO_WRB GPIO_WRB
                        Set a particular GPIO # to 1 or 0
  --gpio-rd GPIO_RD     Read from a GPIO mask (ex: '0x10')
  --gpio-watch GPIO_WATCH
                        Start watching a GPIO mask for changes (ex: '0x10')

Tunnel:
  Arguments related to establishing a tunnel device over the mesh.

  --tunnel              Create a TUN tunnel device for forwarding IP packets over the mesh
  --subnet TUNNEL_NET   Sets the local-end subnet address for the TUN IP bridge. (ex: 10.115' which is the default)

If no connection arguments are specified, we search for a compatible serial device, and if none is found, then attempt a TCP connection to localhost.```

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.04%. Comparing base (b73cc1f) to head (915066e).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #679      +/-   ##
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+ Coverage   60.69%   61.04%   +0.34%     
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  Files          24       24              
  Lines        3715     3748      +33     
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+ Hits         2255     2288      +33     
  Misses       1460     1460              

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