Update user profile handling and enhance sample pack features

Commit notes

- Added profile update functionality in the AuthHandler, allowing users to update their name, bio, and images. - Introduced a new API endpoint for updating user profiles, ensuring proper validation and error handling. - Enhanced the SamplePackHandler to support optional cover image uploads via multipart form-data. - Updated frontend components to integrate profile update functionality, including a new CreatorProfilePage for user profile management. - Added new routes and queries to facilitate user interactions with their profiles and sample packs. - Updated pnpm dependencies to include new Tiptap extensions for improved text editing capabilities.