refactoring: backend services & frontend hooks

[in-mai-space]

Frontend refactor:

• abstraction of useInfiniteQuery (get endpoints with pagination) and useToggleBase (like and follow) hooks
• move notification permission hooks into separate files to declutter main _layout

Backend refactor:

• modify user model to include firstName and lastName, apparently it's required when registering
• refactor endpoints to use MongoDB IDs instead of Supabase IDs, except for authentication and session-based user retrieval endpoints
• consolidate user-related functions into the User Service interface for better organization
• refactor / implement atomic transactions for services method and using mongoose transaction if necessary (thanks to MongoDB Atlas setup 🙏🏻)
• rename user-related controllers for consistency
• add documentation to the Service interfaces