overlay + library: the preloader working on glass, album names that land on the right self-titled record, and covers warmed before you scroll to them

src-tauri/src/lib.rs

@@ -88,6 +88,7 @@ pub fn run() {
             commands::library_album_stats,
             commands::album_tracks,
             commands::album_art,
+            commands::library_art_prewarm,
             commands::stream_embedded_art,
             commands::refresh_album_art,
             commands::refresh_all_album_art,