Frontend (@appwrite/console): Add TikTok OAuth UI

[stnguyen90]

Update @appwrite/console (front end) to support TikTok OAuth integration:

• Add TikTok as a selectable authentication provider in UI
• Provide input fields for TikTok credentials in console's project settings/auth settings
• Display relevant error messages and validation for TikTok
• Update login/sign-in forms to include TikTok
• Write tests covering UI changes

Reference UI for other OAuth providers for consistency.

[github-actions]

Agentic Agentic Triage triggered by this issue.

[jaysomani]

i would love to work on this issue can you assign this to me

[stnguyen90]

@jaysomani, thanks for your interest! We'd prefer to keep this internal as there might be some back and forth on the icons. If you're interested in contributing, please see our contributing docs.