implemented new loadable state concept

lib/state/app/modules/marianumMessage/bloc/marianum_message_state.dart

@@ -0,0 +1,41 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'marianum_message_state.freezed.dart';
+part 'marianum_message_state.g.dart';
+
+
+@freezed
+class MarianumMessageState with _$MarianumMessageState {
+  const factory MarianumMessageState({
+    required MarianumMessageList messageList,
+  }) = _MarianumMessageState;
+
+  factory MarianumMessageState.fromJson(Map<String, dynamic> json) => _$MarianumMessageStateFromJson(json);
+}
+
+@freezed
+class MarianumMessageList with _$MarianumMessageList {
+  const factory MarianumMessageList({
+    required String base,
+    required List<MarianumMessage> messages,
+  }) = _MarianumMessageList;
+
+  factory MarianumMessageList.fromJson(Map<String, dynamic> json) => _$MarianumMessageListFromJson(json);
+}
+
+@freezed
+class MarianumMessage with _$MarianumMessage {
+  const factory MarianumMessage({
+    required String name,
+    required String date,
+    required String url,
+  }) = _MarianumMessage;
+
+  factory MarianumMessage.fromJson(Map<String, dynamic> json) => _$MarianumMessageFromJson(json);
+}
+
+
+enum GradeAveragesGradingSystem {
+  highSchool,
+  middleSchool,
+}