add page for tv shows

only showing up if enabled in backend

lib/video_screen/videoscreen_desktop.dart

@@ -19,6 +19,7 @@ class _VideoScreenDesktopState extends State<VideoScreenDesktop> {
   Widget build(BuildContext context) {
     return Video(
         player: _player,
+        showFullscreenButton: true,
         scale: 1.0, // default
         showControls: true);
   }