* 🗃️ Rename users table into user_daily_usage
* 💥 replace User model with UserIdentity model
* 🗃️ New UserDailyUsage class for database interaction
* 🐛 fix daily requests rate limiting per user
* 🐛 fix user stats and properties update
* ✏️ add typing and linting
* 🚚 rename user_dialy_usage Class into user_usage & requests_count into daily_requests_count
* 🚑 fix some rebase errors
* 🗃️ add new tables for multiple brains
* 🗑️ remove date input from fetch_user_id_from_credentials
* ✨ new /brain endpoints
* ♻️ refactor backend utils by splitting it into files
* 💡 comments for next actions to update /upload
* feat: user can create api keys
* fix: linting on build
* Update backend/routes/api_key_routes.py
* chore: rename and refactor AuthBearer
* chore: add types