Let tests run without supabase and openai keys

[kavitharaju]

Tests need to be run in ENVs like gitactions where we dont want to set these values. The App needs them to start though. Now we are handling it in code base to let the app start without these keys to be able to run tests. Ideally in normal runs app should throw error and work without error in tests when these keys are absent.

Originally posted by @kavitharaju in #107 (comment)