The Go module name has been changed from `carrot_bbs` to `with_you`, which requires
all import paths to be updated throughout the codebase and by external consumers.
BREAKING CHANGE: Module name changed from carrot_bbs to with_you. All imports
and dependencies must be updated from carrot_bbs/* to with_you/*.
- Added UploadService to handle image uploads and validation for chat messages.
- Updated ChatService and MessageService to utilize UploadService for validating image segments in messages.
- Enhanced wire generation to inject UploadService into relevant services.
- Introduced UploadImageBytes method in UploadService for uploading images directly from memory.
- Added TrustedPublicURLPrefix method in S3 Client for generating public URLs for uploaded images.
