feat:增加博客分类模块

lib/models/blog.dart

@@ -59,4 +59,20 @@ class Blog {
   factory Blog.fromJson(Map<String, dynamic> json) => _$BlogFromJson(json);
 
   Map<String, dynamic> toJson() => _$BlogToJson(this);
-}
+}
+
+@JsonSerializable()
+class BlogCategory {
+  @JsonKey(name: 'name')
+  final String name;
+
+  @JsonKey(name: 'count')
+  final int count;
+
+  BlogCategory({required this.name, required this.count});
+
+  factory BlogCategory.fromJson(Map<String, dynamic> json) =>
+      _$BlogCategoryFromJson(json);
+
+  Map<String, dynamic> toJson() => _$BlogCategoryToJson(this);
+}