Refactor member page (#3)

* refactor: member page

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lib/models/space/entrance.dart

@@ -0,0 +1,20 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'entrance.g.dart';
+
+@JsonSerializable()
+class Entrance {
+	String? icon;
+	@JsonKey(name: 'jump_url') 
+	String? jumpUrl;
+	@JsonKey(name: 'is_show_entrance') 
+	bool? isShowEntrance;
+
+	Entrance({this.icon, this.jumpUrl, this.isShowEntrance});
+
+	factory Entrance.fromJson(Map<String, dynamic> json) {
+		return _$EntranceFromJson(json);
+	}
+
+	Map<String, dynamic> toJson() => _$EntranceToJson(this);
+}