made app modules movable in their order

lib/storage/general/modulesSettings.dart

@@ -0,0 +1,19 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+import '../../state/app/modules/app_modules.dart';
+
+part 'modulesSettings.g.dart';
+
+@JsonSerializable()
+class ModulesSettings {
+  List<Modules> moduleOrder;
+  List<Modules> hiddenModules;
+
+  ModulesSettings({
+    required this.moduleOrder,
+    required this.hiddenModules
+  });
+
+  factory ModulesSettings.fromJson(Map<String, dynamic> json) => _$ModulesSettingsFromJson(json);
+  Map<String, dynamic> toJson() => _$ModulesSettingsToJson(this);
+}

lib/storage/general/modulesSettings.g.dart

@@ -0,0 +1,35 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'modulesSettings.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+ModulesSettings _$ModulesSettingsFromJson(Map<String, dynamic> json) =>
+    ModulesSettings(
+      moduleOrder: (json['moduleOrder'] as List<dynamic>)
+          .map((e) => $enumDecode(_$ModulesEnumMap, e))
+          .toList(),
+      hiddenModules: (json['hiddenModules'] as List<dynamic>)
+          .map((e) => $enumDecode(_$ModulesEnumMap, e))
+          .toList(),
+    );
+
+Map<String, dynamic> _$ModulesSettingsToJson(ModulesSettings instance) =>
+    <String, dynamic>{
+      'moduleOrder':
+          instance.moduleOrder.map((e) => _$ModulesEnumMap[e]!).toList(),
+      'hiddenModules':
+          instance.hiddenModules.map((e) => _$ModulesEnumMap[e]!).toList(),
+    };
+
+const _$ModulesEnumMap = {
+  Modules.timetable: 'timetable',
+  Modules.talk: 'talk',
+  Modules.files: 'files',
+  Modules.marianumMessage: 'marianumMessage',
+  Modules.roomPlan: 'roomPlan',
+  Modules.gradeAveragesCalculator: 'gradeAveragesCalculator',
+  Modules.holidays: 'holidays',
+};