feat(oauth): general oauth improvements, added x and supabase oauth

[waleedlatif1]

• added x oauth
• added x oauth to x tools
• added supabase oauth
• ui improvements for action required banner in settings > credentials
• improvement(oauth): if there is already an account connected, don't display the connect button in the credential selector
• fixed typo in marketplace for customer_service

Description

• Added X OAuth, updated blocks to use OAuth credential selector and tools to use credentials instead of API keys
• Added Supabase OAuth
• Fixed bug where we fetch credentials repeatedly while credential dropdown is open, only fetch on mount
• UI improvements for Settings > Credentials
• Fixed typo in marketplace

Fixes #98

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Performance improvement

How Has This Been Tested?

Authenticated with X, ran the X block. Authenticated with Supabase.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules
• I have updated version numbers as needed (if needed)

Security Considerations:

• My changes do not introduce any new security vulnerabilities
• I have considered the security implications of my changes

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