feat(quick-7): wire frontend pin-default-playlist feature end-to-end

- Add pinDefault state, getter, setter to favorites-store
- Add pinDefault getter and setPinDefault to favorites-controller
- Update sortedEntries in playlist-view to pin default playlist to top
- Add Pin to Top toggle in config page Favorites section
- Add Wails bindings for GetPinDefaultPlaylist/SetPinDefaultPlaylist
- React to PinDefault in FavoritesConfigChanged event payload

frontend/src/store/controllers/favorites-controller.ts

@@ -69,6 +69,10 @@ export class FavoritesController
         return favoritesStore.getPlaylistId();
     }
 
+    get pinDefault(): boolean {
+        return favoritesStore.getPinDefault();
+    }
+
     /**
      * Returns the icon name for the current icon style.
      */
@@ -113,4 +117,10 @@ export class FavoritesController
     ): Promise<void> {
         await favoritesStore.setDefaultPlaylist(id);
     }
+
+    async setPinDefault(
+        pin: boolean,
+    ): Promise<void> {
+        await favoritesStore.setPinDefault(pin);
+    }
 }