Improve onboarding system

[AnkushMalaker]

Improve setup scripts, docs, and add a recording

[linear]

FRI-43

[AnkushMalaker]

Completed in #131 and #134
Given you already have API keys and subtract the build time, it takes 1.5 minutes to go from cloning the repo, going through the wizard and seeing the website. Looks good to close.