update playlists

src/library/artist.rs

@@ -37,7 +37,7 @@ impl Artist {
 
         let artist_path = track_path.parent()?.parent()?;
 
-        for ext in ["png", "jpg", "jpeg", "avif"] {
+        for ext in ["png", "jpg", "jpeg", "avif", "webp"] {
             let cover_file = artist_path.join(format!("artist.{ext}"));
 
             if cover_file.exists() {

src/library/playlist.rs

@@ -65,6 +65,7 @@ impl ToAPI for Playlist {
         serde_json::json!({
             "id": self._id,
             "owner": self.owner.id(),
+            "visibility": serde_json::to_value(&self.visibility).unwrap(),
             "title": self.title,
             "tracks": self.tracks.iter().map(|x| x.id()).collect::<Vec<_>>()
         })