feat(mobile): show local assets (#905)

* introduce Asset as composition of AssetResponseDTO and AssetEntity

* filter out duplicate assets (that are both local and remote, take only remote for now)

* only allow remote images to be added to albums

* introduce ImmichImage to render Asset using local or remote data

* optimized deletion of local assets

* local video file playback

* allow multiple methods to wait on background service finished

* skip local assets when adding to album from home screen

* fix and optimize delete

* show gray box placeholder for local assets

* add comments

* fix bug: duplicate assets in state after onNewAssetUploaded

mobile/lib/modules/album/views/album_viewer_page.dart

@@ -16,6 +16,7 @@ import 'package:immich_mobile/modules/album/ui/album_viewer_thumbnail.dart';
 import 'package:immich_mobile/modules/settings/providers/app_settings.provider.dart';
 import 'package:immich_mobile/modules/settings/services/app_settings.service.dart';
 import 'package:immich_mobile/routing/router.dart';
+import 'package:immich_mobile/shared/models/asset.dart';
 import 'package:immich_mobile/shared/ui/immich_loading_indicator.dart';
 import 'package:immich_mobile/shared/ui/immich_sliver_persistent_app_bar_delegate.dart';
 import 'package:immich_mobile/shared/views/immich_loading_overlay.dart';
@@ -38,9 +39,9 @@ class AlbumViewerPage extends HookConsumerWidget {
     /// If they exist, add to selected asset state to show they are already selected.
     void _onAddPhotosPressed(AlbumResponseDto albumInfo) async {
       if (albumInfo.assets.isNotEmpty == true) {
-        ref
-            .watch(assetSelectionProvider.notifier)
-            .addNewAssets(albumInfo.assets.toList());
+        ref.watch(assetSelectionProvider.notifier).addNewAssets(
+              albumInfo.assets.map((e) => Asset.remote(e)).toList(),
+            );
       }
 
       ref.watch(assetSelectionProvider.notifier).setIsAlbumExist(true);
@@ -205,8 +206,9 @@ class AlbumViewerPage extends HookConsumerWidget {
             delegate: SliverChildBuilderDelegate(
               (BuildContext context, int index) {
                 return AlbumViewerThumbnail(
-                  asset: albumInfo.assets[index],
-                  assetList: albumInfo.assets,
+                  asset: Asset.remote(albumInfo.assets[index]),
+                  assetList:
+                      albumInfo.assets.map((e) => Asset.remote(e)).toList(),
                   showStorageIndicator: showStorageIndicator,
                 );
               },

mobile/lib/modules/album/views/create_album_page.dart

@@ -166,7 +166,7 @@ class CreateAlbumPage extends HookConsumerWidget {
                 return GestureDetector(
                   onTap: _onBackgroundTapped,
                   child: SharedAlbumThumbnailImage(
-                    asset: selectedAssets.toList()[index],
+                    asset: selectedAssets.elementAt(index),
                   ),
                 );
               },

mobile/lib/modules/album/views/sharing_page.dart

@@ -18,7 +18,6 @@ class SharingPage extends HookConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     var box = Hive.box(userInfoBox);
-    var thumbnailRequestUrl = '${box.get(serverEndpointKey)}/asset/thumbnail';
     final List<AlbumResponseDto> sharedAlbums = ref.watch(sharedAlbumProvider);
 
     useEffect(