feat(user-relation): 实现用户关注与取消关注功能

- 在 t_following 和 t_fans 表中添加联合唯一索引，确保关注关系的幂等性- 新增 RocketMQ 消费者 FollowUnfollowConsumer，处理关注和取消关注消息
- 实现关注逻辑，通过事务保证关注表和粉丝表数据一致性
- 修改 DeleteNoteLocalCacheConsumer 的 consumerGroup 名称，避免消费者组冲突，否则可能遇到消费者不消费的情况

http-client/gateApi.http

@@ -3,7 +3,7 @@ POST http://localhost:8000/auth/verification/code/send
 Content-Type: application/json
 
 {
-  "email": "ssw010723@gmail.com"
+  "email": "2628273921@qq.com"
 }
 
 ### 登录/注册
@@ -11,8 +11,8 @@ POST http://localhost:8000/auth/login
 Content-Type: application/json
 
 {
-  "email": "ssw010723@gmail.com",
-  "code": "135466",
+  "email": "2628273921@qq.com",
+  "code": "825004",
   "type": 1
 }
 
@@ -144,5 +144,5 @@ Content-Type: application/json
 Authorization: Bearer {{token}}
 
 {
-  "followUserId":{{otherUserId}}
+  "followUserId": {{otherUserId}}
 }