feat(mobile): platform image providers (#20927)

* platform image providers

* use key

* fix cache manager

* more logs, cancel on dispose instead

* split into separate files

* fix saving to cache

* cancel multi-stage provider

* refactored `getInitialImage`

* only wait for disposal for full images

* cached image works

* formatting

* lower asset viewer ram usage

---------

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

mobile/lib/widgets/photo_view/src/core/photo_view_core.dart

@@ -421,6 +421,7 @@ class PhotoViewCoreState extends State<PhotoViewCore>
             filterQuality: widget.filterQuality,
             width: scaleBoundaries.childSize.width * scale,
             fit: BoxFit.cover,
+            isAntiAlias: widget.filterQuality == FilterQuality.high,
           );
   }
 }