- Added TrainingInvitation and TrainingAttendance models to manage invitations and attendance tracking for training sessions.
- Enhanced the Training model with additional fields for scheduling, location management, and group management.
- Introduced enums for TrainingLocationType and AttendanceStatus to standardize location types and attendance tracking.
- Removed outdated schemas related to attachments, financial records, and other domains to streamline the schema structure.
- Updated documentation to reflect changes and improve clarity on training and certification management.