refactor(diary): Diary cubit

lib/features/diary/models/diary_model.dart

@@ -0,0 +1,23 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'diary_model.freezed.dart';
+part 'diary_model.g.dart';
+
+@freezed
+class DiaryModel with _$DiaryModel {
+  const factory DiaryModel({
+    required int id,
+    required String state,
+    String? image,
+    required String description,
+    String? author_name,
+    String? author_avatar_path,
+    @JsonKey(name: "youtube_url") required String youtubeUrl,
+    @JsonKey(name: "created_at") required DateTime createdAt,
+    @JsonKey(name: "updated_at") required DateTime updatedAt,
+    required String title,
+  }) = _DiaryModel;
+
+  factory DiaryModel.fromJson(Map<String, Object?> json) =>
+      _$DiaryModelFromJson(json);
+}