feat: Implement BalanceRepository for group balance calculations
feat: Create ExpenseRepository for managing expenses
feat: Add services for handling expenses and storage operations
fix: Update import paths for models in repositories and services
refactor: Rename CountContent to AccountContent in HomePage
chore: Add StorageService for image upload and management
- Updated signup.dart to replace Provider with BLoC for state management.
- Created AuthRepository to handle authentication logic and Firestore user management.
- Added TripRepository and UserRepository for trip and user data management.
- Implemented methods for user sign-in, sign-up, and data retrieval in repositories.
- Enhanced trip management with create, update, delete, and participant management functionalities.
- Updated AuthService to include new methods for sign-in and sign-up.
- Removed unnecessary print statements from TripService for cleaner code.
- Added dependencies for flutter_bloc and equatable in pubspec.yaml.
Not tested yet
