opt: intro panel

Closes #14

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/pages/video/detail/view.dart

@@ -1273,6 +1273,9 @@ class _VideoDetailPageState extends State<VideoDetailPage>
               showIntroDetail: showIntroDetail,
             ),
           ),
+        SliverToBoxAdapter(
+          child: SizedBox(height: MediaQuery.paddingOf(context).bottom),
+        )
       ],
     );
   }