add proper logging

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

@@ -0,0 +1,11 @@
+import 'dart:async';
+
+import 'package:immich_mobile/domain/models/user.model.dart';
+
+abstract class IUserRepository {
+  /// Fetches user
+  FutureOr<User?> getUser(String userId);
+
+  /// Insert user
+  FutureOr<bool> insertUser(User user);
+}