- Added HackathonStatusChangeRequestDto for status change requests.
- Implemented update_hackathon_status method in HackathonRepository to handle status updates.
- Enhanced HackathonService to validate and process status changes, including audit logging.
- Introduced HackathonAuditLogSchema to track changes and actions related to hackathons.
- Created HackathonAuditRepository for managing audit logs.
- Added validation functions for hackathon operations, including dates, organizers, and prizes.
- Implemented atomic service for creating hackathons with timelines and events, ensuring all-or-nothing behavior.
- Updated mod.rs to include new modules for audit logging and validation.