Move Yggdrasil API endpoints from /api/v1/yggdrasil to /api/yggdrasil for
better route organization and compatibility with standard Yggdrasil protocol.
Also upgrade Go to 1.25, update dependencies, and migrate email package from
jordan-wright/email to gopkg.in/mail.v2. Remove deprecated UUID design plan.
- Deleted the Token model and its repository, transitioning to a Redis-based token management system.
- Updated the service layer to utilize Redis for token storage, enhancing performance and scalability.
- Refactored the container to remove TokenRepository and integrate the new token service.
- Cleaned up the Dockerfile and other files by removing unnecessary whitespace and comments.
- Enhanced error handling and logging for Redis initialization and usage.
