Feat/questions supabase

[mariojsnunes]

PR Checklist

• - Commit messages are descriptive, it will be used in our Release Notes
• - Unit and e2e tests for the changes that have been added (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Refactoring (no functional changes)

What is the current behavior?

Questions are stored in firebase.

What is the new behavior?

Questions are stored in supabase.
Also migrated:

• tags
• useful
• follow (subscribers)

Question images are also saved in supabase storage.
Removed moderation code for questions (wasn't being used in the UI)

TODO:

• can we have a custom supabase cdn url? (so we don't expose the supabase url)
• data migration

Does this PR introduce a breaking change?

• Yes
• No

Git Issues

Closes #