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;

lib/storage/base/settings.g.dart

@@ -23,6 +23,8 @@ Settings _$SettingsFromJson(Map<String, dynamic> json) => Settings(
           json['fileViewSettings'] as Map<String, dynamic>),
       notificationSettings: NotificationSettings.fromJson(
           json['notificationSettings'] as Map<String, dynamic>),
+      devToolsSettings: DevToolsSettings.fromJson(
+          json['devToolsSettings'] as Map<String, dynamic>),
     );
 
 Map<String, dynamic> _$SettingsToJson(Settings instance) => <String, dynamic>{
@@ -35,4 +37,5 @@ Map<String, dynamic> _$SettingsToJson(Settings instance) => <String, dynamic>{
       'holidaysSettings': instance.holidaysSettings.toJson(),
       'fileViewSettings': instance.fileViewSettings.toJson(),
       'notificationSettings': instance.notificationSettings.toJson(),
+      'devToolsSettings': instance.devToolsSettings.toJson(),
     };

lib/storage/devTools/devToolsSettings.dart

@@ -0,0 +1,15 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'devToolsSettings.g.dart';
+
+@JsonSerializable()
+class DevToolsSettings {
+  bool showPerformanceOverlay;
+  bool checkerboardOffscreenLayers;
+  bool checkerboardRasterCacheImages;
+
+  DevToolsSettings({required this.showPerformanceOverlay, required this.checkerboardOffscreenLayers, required this.checkerboardRasterCacheImages});
+
+  factory DevToolsSettings.fromJson(Map<String, dynamic> json) => _$DevToolsSettingsFromJson(json);
+  Map<String, dynamic> toJson() => _$DevToolsSettingsToJson(this);
+}

lib/storage/devTools/devToolsSettings.g.dart

@@ -0,0 +1,22 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'devToolsSettings.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+DevToolsSettings _$DevToolsSettingsFromJson(Map<String, dynamic> json) =>
+    DevToolsSettings(
+      showPerformanceOverlay: json['showPerformanceOverlay'] as bool,
+      checkerboardOffscreenLayers: json['checkerboardOffscreenLayers'] as bool,
+      checkerboardRasterCacheImages:
+          json['checkerboardRasterCacheImages'] as bool,
+    );
+
+Map<String, dynamic> _$DevToolsSettingsToJson(DevToolsSettings instance) =>
+    <String, dynamic>{
+      'showPerformanceOverlay': instance.showPerformanceOverlay,
+      'checkerboardOffscreenLayers': instance.checkerboardOffscreenLayers,
+      'checkerboardRasterCacheImages': instance.checkerboardRasterCacheImages,
+    };