Add Subsonic API support for compatibility with CarPlay apps like Amperfy and play:Sub

tasks.md

@@ -14,10 +14,13 @@
 - [x] File upload endpoint
 - [x] Album grouping and management
 
+## In Progress
+- [x] Subsonic API implementation
+
 ## Todo
-- [ ] Search functionality
-- [ ] User authentication
+- [ ] Enhanced user authentication
 - [ ] Multiple user support
 - [ ] Advanced filtering
 - [ ] Caching layer
 - [ ] Transcoding support
+- [ ] HTTPS/SSL support