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

src/server.js

@@ -6,6 +6,7 @@ import tracksRouter from './routes/tracks.js';
 import playlistsRouter from './routes/playlists.js';
 import albumsRouter from './routes/albums.js';
 import uploadRouter from './routes/upload.js';
+import subsonicRouter from './routes/subsonic.js';
 import { initDatabase } from './database/db.js';
 
 const __filename = fileURLToPath(import.meta.url);
@@ -27,6 +28,9 @@ app.use('/api/playlists', playlistsRouter);
 app.use('/api/albums', albumsRouter);
 app.use('/api/upload', uploadRouter);
 
+// Subsonic API
+app.use('/rest', subsonicRouter);
+
 // Serve audio files
 app.use('/audio', express.static(path.join(process.cwd(), 'audio_library')));
 app.use('/artwork', express.static(path.join(process.cwd(), 'artwork')));