feat: full local assets / album sync

mobile-v2/lib/domain/interfaces/album_asset.interface.dart

@@ -0,0 +1,17 @@
+import 'dart:async';
+
+import 'package:immich_mobile/domain/models/asset.model.dart';
+
+abstract interface class IAlbumToAssetRepository {
+  /// Link a list of assetIds to the given albumId
+  FutureOr<bool> addAssetIds(int albumId, Iterable<int> assetIds);
+
+  /// Returns assets that are only part of the given album and nothing else
+  FutureOr<List<int>> getAssetIdsOnlyInAlbum(int albumId);
+
+  /// Returns the assets for the given [albumId]
+  FutureOr<List<Asset>> getAssetsForAlbum(int albumId);
+
+  /// Removes album with the given [albumId]
+  FutureOr<void> deleteAlbumId(int albumId);
+}