feat: add UrlSource for arbitrary URL-based media playback

Introduces the pmourlsource crate as a standard MusicSource that resolves HTTP/HTTPS URLs via a priority-ordered UrlHandler registry. Includes specialized handlers for Qobuz and Radio France alongside an SSRF-safe generic scraper supporting playlists, feeds, and HTML audio. Integrates with existing browse flows, REST endpoints, and Android Web Share targets while updating source capability flags to correctly route URL queries.

PMOMusic/src/main.rs

@@ -60,6 +60,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         tracing::warn!("⚠️ Failed to register Radio France source: {}", e);
     }
 
+    // Enregistrer la source URL / Partage
+    info!("🔗 Registering URL source...");
+    if let Err(e) = server.write().await.register_urlsource().await {
+        tracing::warn!("⚠️ Failed to register URL source: {}", e);
+    }
+
     // Lister toutes les sources enregistrées
     let sources = server.read().await.list_music_sources().await;
     info!("✅ {} music source(s) registered", sources.len());