Draft: feat: container virtual registry push/pull API endpoints
Relates to issue #549131
This MR was created by Duo in Session 1191844
Changes
- Add API endpoints for container image virtual registry push/pull operations
- Implement GET endpoints for blobs and manifests from registry objects
- Add POST upload endpoints for workhorse assisted uploads
- Reuse dependency proxy authentication service for Docker client compatibility
- Support v2 prefix routing structure required by Docker clients
- Implement header forwarding restrictions using RestrictForwardedResponseHeaders