Update for the "full flow"

tests/integration.rs

@@ -66,6 +66,10 @@ impl MetadataProvider for MockProvider {
     async fn get_artist_releases(&self, _artist_mbid: &str, _limit: u32) -> TagResult<Vec<DiscographyEntry>> {
         Ok(vec![])
     }
+
+    async fn get_release_tracks(&self, _release_mbid: &str) -> TagResult<Vec<shanty_tag::provider::ReleaseTrack>> {
+        Ok(vec![])
+    }
 }
 
 async fn test_db() -> Database {