Refactor quic setup

[Tratcher]

This works to improve the user experience around enabling and configuring Http3 and Quic.

• Kestrel now has a direct dependency on the quic transport
• UseQuic is now called automatically, but no-ops on platforms where it's not supported.
• The Alpn setting has been removed from QuicTransportOptions and is now passed directly on SslApplicationProtocol
• QuicTransportOptions.IdleTimeout defaults to 2 minutes because a non-zero default is required by System.Net.Quic.
• Enabling Http/3 no-ops under several conditions, similar to HTTP/2:
  • If Http1 is enabled without Tls
  • If Http1 or 2 is enabled with Tls and the the platform does not support Quic.
• Enabling Http/3 throws if it's enabled without a fallback and either Tls is not used or Quic is not supported.
• I've added an HttpClient project for local testing since browsers do not support local testing.

Contributes to #34858, #34517

[wtgodbe]

So anyone using Kestrel will be using Quic, even if not using Http3? Does it no-op for Http1/2?

[Tratcher]

Right, this adds the services but they're only used if you enable http3.