- Add new AdminHandler with methods for dashboard, schedules, users, and bookings
- Implement GetDashboard method to retrieve admin dashboard statistics
- Add CreateSchedule method with validation and error handling
- Implement GetUsers method with pagination support
- Add GetBookings method with pagination and filtering capabilities
- Implement GetFinancialReports method with date range filtering
- Add UpdateSchedule method to modify existing schedule slots
- Enhance error handling and response formatting for admin-related operations
- Integrate admin service methods for comprehensive administrative tasks
- Add JWT authentication middleware with token validation
- Implement user context extraction methods for user ID, email, and admin status
- Create admin middleware to restrict access to admin-only routes
- Add convenience method to combine authentication and admin authorization
- Update auth middleware to handle token parsing, validation, and context setting
- Enhance error handling for various authentication scenarios
- Add new JWT service and related dependencies in go.mod
