Made GradeAverage persistent

lib/storage/base/settings.g.dart

@@ -0,0 +1,20 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'settings.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+Settings _$SettingsFromJson(Map<String, dynamic> json) => Settings(
+      appTheme: Settings._themeFromJson(json['appTheme'] as String),
+      devToolsEnabled: json['devToolsEnabled'] as bool,
+      gradeAveragesSettings: GradeAveragesSettings.fromJson(
+          json['gradeAveragesSettings'] as Map<String, dynamic>),
+    );
+
+Map<String, dynamic> _$SettingsToJson(Settings instance) => <String, dynamic>{
+      'appTheme': Settings._themeToJson(instance.appTheme),
+      'devToolsEnabled': instance.devToolsEnabled,
+      'gradeAveragesSettings': instance.gradeAveragesSettings.toJson(),
+    };