migrated holidays module to MarianumConnect API, replaced local Holiday model.

lib/api/marianumconnect/models/mc_holiday.dart

@@ -0,0 +1,30 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'mc_holiday.g.dart';
+
+@JsonSerializable(explicitToJson: true)
+class McHoliday {
+  final String shortName;
+  final String longName;
+
+  @JsonKey(fromJson: _dateFromJson, toJson: _dateToJson)
+  final DateTime startDate;
+
+  @JsonKey(fromJson: _dateFromJson, toJson: _dateToJson)
+  final DateTime endDate;
+
+  McHoliday({
+    required this.shortName,
+    required this.longName,
+    required this.startDate,
+    required this.endDate,
+  });
+
+  factory McHoliday.fromJson(Map<String, dynamic> json) =>
+      _$McHolidayFromJson(json);
+  Map<String, dynamic> toJson() => _$McHolidayToJson(this);
+
+  static DateTime _dateFromJson(String raw) => DateTime.parse(raw);
+  static String _dateToJson(DateTime d) =>
+      '${d.year.toString().padLeft(4, '0')}-${d.month.toString().padLeft(2, '0')}-${d.day.toString().padLeft(2, '0')}';
+}

lib/api/marianumconnect/models/mc_holiday.g.dart

@@ -0,0 +1,21 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'mc_holiday.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+McHoliday _$McHolidayFromJson(Map<String, dynamic> json) => McHoliday(
+  shortName: json['shortName'] as String,
+  longName: json['longName'] as String,
+  startDate: McHoliday._dateFromJson(json['startDate'] as String),
+  endDate: McHoliday._dateFromJson(json['endDate'] as String),
+);
+
+Map<String, dynamic> _$McHolidayToJson(McHoliday instance) => <String, dynamic>{
+  'shortName': instance.shortName,
+  'longName': instance.longName,
+  'startDate': McHoliday._dateToJson(instance.startDate),
+  'endDate': McHoliday._dateToJson(instance.endDate),
+};