* feat: add YouTube social link to user profiles
- Add youtube_url column to auth_users schema
- Add DB migration for the new column
- Update updateProfile action with YouTube URL validation
- Update getUserProfile and getPublicProfile to include youtubeUrl
- Add YouTube input field to settings page
- Display YouTube icon on public profile pages
* fix: use drizzle-kit generate for youtube_url migration
Replaces manually created migration with proper drizzle-kit generated
migration that includes meta snapshot and journal entry.
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Co-authored-by: Anton Pascal <anton-pascal@users.noreply.github.com>