chore(wip): upgrade dependencies, begin refactor

frontend/lib/domain/entities/landmark_description.dart

@@ -0,0 +1,15 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+part 'landmark_description.freezed.dart';
+part 'landmark_description.g.dart';
+
+
+@Freezed(makeCollectionsUnmodifiable: false)
+abstract class LandmarkDescription with _$LandmarkDescription {
+  const factory LandmarkDescription({
+    required String description,
+    required List<String> tags,
+  }) = _LandmarkDescription;
+
+  factory LandmarkDescription.fromJson(Map<String, Object?> json) => _$LandmarkDescriptionFromJson(json);
+}
+