refactor(mobile): Refactor video player page and gallery bottom app bar (#7625)

* Fixes double video auto initialize issue and placeholder for video controller

* WIP unravel stack index

* Refactors video player controller

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fixing video

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Working

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* Fixes hide on pause

* Got hiding when tapped working

* Hides controls when video starts and fixes placeholder for memory card

Remove prints

* Fixes show controls with microtask

* fix LivePhotos not playing

* removes unused function callbacks and moves wakelock

* Update motion video

* Fixing motion photo playing

* Renames to isPlayingVideo

* Fixes playing video on change

* pause on dispose

* fixing issues with sync between controls

* Adds gallery app bar

* Switches to memoized

* Fixes pause

* Revert "Switches to memoized"

This reverts commit 234e6741dea05aa0b967dde746f1d625f15bed94.

* uses stateful widget

* Fixes double video play by using provider and new chewie video player

wip

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Fixes motion photos

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Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

mobile/lib/modules/memories/ui/memory_card.dart

@@ -69,14 +69,16 @@ class MemoryCard extends StatelessWidget {
                 return Hero(
                   tag: 'memory-${asset.id}',
                   child: VideoViewerPage(
+                    key: ValueKey(asset),
                     asset: asset,
                     showDownloadingIndicator: false,
-                    placeholder: ImmichImage(
-                      asset,
-                      fit: fit,
+                    placeholder: SizedBox.expand(
+                      child: ImmichImage(
+                        asset,
+                        fit: fit,
+                      ),
                     ),
                     hideControlsTimer: const Duration(seconds: 2),
-                    onVideoEnded: onVideoEnded,
                     showControls: false,
                   ),
                 );