Added Performance overlays in developer options

lib/storage/base/settings.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:json_annotation/json_annotation.dart';
 
+import '../devTools/devToolsSettings.dart';
 import '../file/fileSettings.dart';
 import '../fileView/fileViewSettings.dart';
 import '../gradeAverages/gradeAveragesSettings.dart';
@@ -27,6 +28,7 @@ class Settings {
   HolidaysSettings holidaysSettings;
   FileViewSettings fileViewSettings;
   NotificationSettings notificationSettings;
+  DevToolsSettings devToolsSettings;
 
   Settings({
     required this.appTheme,
@@ -38,6 +40,7 @@ class Settings {
     required this.holidaysSettings,
     required this.fileViewSettings,
     required this.notificationSettings,
+    required this.devToolsSettings,
   });
 
   static String _themeToJson(ThemeMode m) => m.name;