feat(mobile): Remote thumbnails and images use an on-disk image cache (#7929)

* Fixes remote full / thumbnail provider

* Adds image cache manager to both remote image providers

format

format

Fix typo in equals

remove unused import

renames image loader

* Adds height and width to the image cache for thumbs

format

* Uses a separate remote and thumbnail cache

format

* Fixes key name

* Changes uri to string, fixes comment

* Chunk events are optional and remote thumbnails don't report chunk events

* better exception handling

---------

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

mobile/lib/shared/ui/immich_image.dart

@@ -42,7 +42,6 @@ class ImmichImage extends StatelessWidget {
     if (asset == null) {
       return ImmichRemoteImageProvider(
         assetId: assetId!,
-        isThumbnail: false,
       );
     }
 
@@ -53,7 +52,6 @@ class ImmichImage extends StatelessWidget {
     } else {
       return ImmichRemoteImageProvider(
         assetId: asset.remoteId!,
-        isThumbnail: false,
       );
     }
   }