feat: Add organization-wide API keys with uniform permissions

[Abid10892]

What does this PR do?

This PR implements organization-wide API keys that grant access to all projects within an organization, including projects created after the API key is generated. Users can now create API keys with uniform permission levels (read/write/manage) that automatically apply to all current and future projects.

Key Features:

• New "All Projects Access" toggle in the API key creation modal
• Uniform permission level selection for organization-wide access
• Automatic access to newly created projects without regenerating API keys
• Backward compatibility with existing environment-specific API keys

Link to Devin run: https://app.devin.ai/sessions/d09fc93c64894880be0d2f67e0978dcf
Requested by: @Abid10892

How should this be tested?

⚠️ Critical: The database migration could not be tested locally due to missing DATABASE_URL environment variable. Please ensure the migration runs successfully in your environment.

Test Cases:

1. Organization-wide API Key Creation:

   • Create an API key with "All Projects Access" enabled
   • Select different permission levels (read/write/manage)
   • Verify the key works for all existing projects

2. Future Project Access:

   • Create a new project in the same organization
   • Verify the existing organization-wide API key can access the new project immediately
   • Test API calls to confirm permissions work correctly

3. Backward Compatibility:

   • Verify existing environment-specific API keys continue working unchanged
   • Test mixed scenarios with both types of API keys in the same organization

4. UI Functionality:

   • Toggle between "All Projects Access" and individual project selection
   • Verify form validation works correctly in both modes
   • Test permission level dropdown functionality

Checklist

Required

• Filled out the "How to test" section in this PR
• Read How we Code at Formbricks
• Self-reviewed my own code
• Commented on my code in hard-to-understand bits
• Ran pnpm build (blocked by local environment setup)
• Checked for warnings, there are none
• Removed all console.logs
• Merged the latest changes from main onto my branch with git pull origin main
• My changes don't cause any responsiveness issues (needs testing)
• First PR at Formbricks? Please sign the CLA!

Appreciated

• If a UI change was made: Added a screen recording or screenshots to this PR (will add after testing)
• Updated the Formbricks Docs if changes were necessary

⚠️ Review Focus Areas

High Priority:

1. Database Migration: Verify the new allProjects and allProjectsPermission fields are added correctly
2. Dynamic Permission Logic: Review the complex permission generation in getApiKeyWithPermissions - this dynamically creates environment permissions for all organization projects
3. Authentication Flow: Ensure changes to core API key authentication don't break existing functionality
4. Type Safety: Verify all TypeScript type changes are consistent across modified files

Medium Priority:

• UI state management between toggle and permission selection
• Form validation logic for the new fields
• Backward compatibility with existing API keys

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