feat(mobile): Library page rework (album sorting, favorites) (#1501)

* Add album sorting

* Change AppBar to match photos page behaviour

* Add buttons

* First crude implementation of the favorites page

* Clean up

* Add favorite button

* i18n

* Add star indicator to thumbnail

* Add favorite logic to separate provider and fix favorite behavior in album

* Review feedback (Add isFavorite variable)

* dev: style buttons

* dev: styled drop down button

---------

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

mobile/lib/modules/album/ui/album_viewer_thumbnail.dart

@@ -1,6 +1,7 @@
 import 'package:auto_route/auto_route.dart';
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/modules/favorite/providers/favorite_provider.dart';
 import 'package:immich_mobile/modules/login/providers/authentication.provider.dart';
 import 'package:immich_mobile/modules/album/providers/asset_selection.provider.dart';
 import 'package:immich_mobile/routing/router.dart';
@@ -26,6 +27,7 @@ class AlbumViewerThumbnail extends HookConsumerWidget {
         ref.watch(assetSelectionProvider).selectedAssetsInAlbumViewer;
     final isMultiSelectionEnable =
         ref.watch(assetSelectionProvider).isMultiselectEnable;
+    final isFavorite = ref.watch(favoriteProvider).contains(asset.id);
 
     viewAsset() {
       AutoRouter.of(context).push(
@@ -96,6 +98,18 @@ class AlbumViewerThumbnail extends HookConsumerWidget {
       );
     }
 
+    buildAssetFavoriteIcon() {
+      return const Positioned(
+        left: 10,
+        bottom: 5,
+        child: Icon(
+          Icons.star,
+          color: Colors.white,
+          size: 18,
+        ),
+      );
+    }
+
     buildAssetSelectionIcon() {
       bool isSelected = selectedAssetsInAlbumViewer.contains(asset);
 
@@ -143,6 +157,7 @@ class AlbumViewerThumbnail extends HookConsumerWidget {
       child: Stack(
         children: [
           buildThumbnailImage(),
+          if (isFavorite) buildAssetFavoriteIcon(),
           if (showStorageIndicator) buildAssetStoreLocationIcon(),
           if (!asset.isImage) buildVideoLabel(),
           if (isMultiSelectionEnable) buildAssetSelectionIcon(),