feat: 全新的客户端协议库！

client-protocol/bean/JoinRequestBean.ts

@@ -1,7 +1,7 @@
 export default class JoinRequestBean {
     declare user_id: string
-    declare title: string
-    declare avatar?: string
+    declare nickname: string
+    declare avatar_file_hash?: string
     declare reason?: string
 
     [key: string]: unknown