Implement album feature on mobile (#420)

* Refactor sharing to album

* Added library page in the bottom navigation bar

* Refactor SharedAlbumService to album service

* Refactor apiProvider to its file

* Added image grid

* render album thumbnail

* Using the wrap to render thumbnail and album info better

* Navigate to album viewer

* After deletion, navigate to the respective page of the shared and non-shared album

* Correctly remove album in local state

* Refactor create album page

* Implemented create non-shared album

mobile/lib/modules/album/models/asset_selection_state.model.dart

@@ -0,0 +1,78 @@
+import 'package:collection/collection.dart';
+
+import 'package:openapi/api.dart';
+
+class AssetSelectionState {
+  final Set<String> selectedMonths;
+  final Set<AssetResponseDto> selectedNewAssetsForAlbum;
+  final Set<AssetResponseDto> selectedAdditionalAssetsForAlbum;
+  final Set<AssetResponseDto> selectedAssetsInAlbumViewer;
+  final bool isMultiselectEnable;
+
+  /// Indicate the asset selection page is navigated from existing album
+  final bool isAlbumExist;
+  AssetSelectionState({
+    required this.selectedMonths,
+    required this.selectedNewAssetsForAlbum,
+    required this.selectedAdditionalAssetsForAlbum,
+    required this.selectedAssetsInAlbumViewer,
+    required this.isMultiselectEnable,
+    required this.isAlbumExist,
+  });
+
+  AssetSelectionState copyWith({
+    Set<String>? selectedMonths,
+    Set<AssetResponseDto>? selectedNewAssetsForAlbum,
+    Set<AssetResponseDto>? selectedAdditionalAssetsForAlbum,
+    Set<AssetResponseDto>? selectedAssetsInAlbumViewer,
+    bool? isMultiselectEnable,
+    bool? isAlbumExist,
+  }) {
+    return AssetSelectionState(
+      selectedMonths: selectedMonths ?? this.selectedMonths,
+      selectedNewAssetsForAlbum:
+          selectedNewAssetsForAlbum ?? this.selectedNewAssetsForAlbum,
+      selectedAdditionalAssetsForAlbum: selectedAdditionalAssetsForAlbum ??
+          this.selectedAdditionalAssetsForAlbum,
+      selectedAssetsInAlbumViewer:
+          selectedAssetsInAlbumViewer ?? this.selectedAssetsInAlbumViewer,
+      isMultiselectEnable: isMultiselectEnable ?? this.isMultiselectEnable,
+      isAlbumExist: isAlbumExist ?? this.isAlbumExist,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'AssetSelectionState(selectedMonths: $selectedMonths, selectedNewAssetsForAlbum: $selectedNewAssetsForAlbum, selectedAdditionalAssetsForAlbum: $selectedAdditionalAssetsForAlbum, selectedAssetsInAlbumViewer: $selectedAssetsInAlbumViewer, isMultiselectEnable: $isMultiselectEnable, isAlbumExist: $isAlbumExist)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    final setEquals = const DeepCollectionEquality().equals;
+
+    return other is AssetSelectionState &&
+        setEquals(other.selectedMonths, selectedMonths) &&
+        setEquals(other.selectedNewAssetsForAlbum, selectedNewAssetsForAlbum) &&
+        setEquals(
+          other.selectedAdditionalAssetsForAlbum,
+          selectedAdditionalAssetsForAlbum,
+        ) &&
+        setEquals(
+          other.selectedAssetsInAlbumViewer,
+          selectedAssetsInAlbumViewer,
+        ) &&
+        other.isMultiselectEnable == isMultiselectEnable &&
+        other.isAlbumExist == isAlbumExist;
+  }
+
+  @override
+  int get hashCode {
+    return selectedMonths.hashCode ^
+        selectedNewAssetsForAlbum.hashCode ^
+        selectedAdditionalAssetsForAlbum.hashCode ^
+        selectedAssetsInAlbumViewer.hashCode ^
+        isMultiselectEnable.hashCode ^
+        isAlbumExist.hashCode;
+  }
+}