feat: persistent memories (#8330)

* feat: persistent memories

* refactor: use new add/remove asset utility

mobile/openapi/test/memory_create_dto_test.dart

@@ -0,0 +1,52 @@
+//
+// AUTO-GENERATED FILE, DO NOT MODIFY!
+//
+// @dart=2.12
+
+// ignore_for_file: unused_element, unused_import
+// ignore_for_file: always_put_required_named_parameters_first
+// ignore_for_file: constant_identifier_names
+// ignore_for_file: lines_longer_than_80_chars
+
+import 'package:openapi/api.dart';
+import 'package:test/test.dart';
+
+// tests for MemoryCreateDto
+void main() {
+  // final instance = MemoryCreateDto();
+
+  group('test MemoryCreateDto', () {
+    // List<String> assetIds (default value: const [])
+    test('to test the property `assetIds`', () async {
+      // TODO
+    });
+
+    // Object data
+    test('to test the property `data`', () async {
+      // TODO
+    });
+
+    // bool isSaved
+    test('to test the property `isSaved`', () async {
+      // TODO
+    });
+
+    // DateTime memoryAt
+    test('to test the property `memoryAt`', () async {
+      // TODO
+    });
+
+    // DateTime seenAt
+    test('to test the property `seenAt`', () async {
+      // TODO
+    });
+
+    // MemoryType type
+    test('to test the property `type`', () async {
+      // TODO
+    });
+
+
+  });
+
+}