feat: show member article

lib/models/space_article/category.dart

@@ -0,0 +1,19 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'category.g.dart';
+
+@JsonSerializable()
+class Category {
+	int? id;
+	@JsonKey(name: 'parent_id') 
+	int? parentId;
+	String? name;
+
+	Category({this.id, this.parentId, this.name});
+
+	factory Category.fromJson(Map<String, dynamic> json) {
+		return _$CategoryFromJson(json);
+	}
+
+	Map<String, dynamic> toJson() => _$CategoryToJson(this);
+}