feat: flash login command

[KAJdev]

Adds a flash login command. This requires changes to the planetscale database, graphql schema, and main-ui to support.

Completes AE-1936

The flow is:

-> flash creates an auth request 
-> opens runpod console 
-> user logins if they are not logged in 
-> user approves or denies the auth request 
-> if approved, graphql generates an API key for the request 
-> flash polls the auth request until it is approved or denied, then grabs the API key, consuming the auth request (cant be used again) 
-> flash stores the key in a credentials file and uses it instead of requiring a RUNPOD_API_KEY environment variable