Added holidays viewer

lib/storage/holidays/holidaysSettings.dart

@@ -0,0 +1,14 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'holidaysSettings.g.dart';
+
+@JsonSerializable()
+class HolidaysSettings {
+  bool dismissedDisclaimer;
+  bool showPastEvents;
+
+  HolidaysSettings({required this.dismissedDisclaimer, required this.showPastEvents});
+
+  factory HolidaysSettings.fromJson(Map<String, dynamic> json) => _$HolidaysSettingsFromJson(json);
+  Map<String, dynamic> toJson() => _$HolidaysSettingsToJson(this);
+}

lib/storage/holidays/holidaysSettings.g.dart

@@ -0,0 +1,19 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'holidaysSettings.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+HolidaysSettings _$HolidaysSettingsFromJson(Map<String, dynamic> json) =>
+    HolidaysSettings(
+      dismissedDisclaimer: json['dismissedDisclaimer'] as bool,
+      showPastEvents: json['showPastEvents'] as bool,
+    );
+
+Map<String, dynamic> _$HolidaysSettingsToJson(HolidaysSettings instance) =>
+    <String, dynamic>{
+      'dismissedDisclaimer': instance.dismissedDisclaimer,
+      'showPastEvents': instance.showPastEvents,
+    };