feat(count): 实现关注与粉丝数统计功能

- 新增关注数与粉丝数 MQ 消费者
- 在用户关系服务中新增关注/取关时发送 MQ 消息逻辑
- 新增关注/取关类型枚举类
- 新增用于统计的 MQ 常量定义
- 调整应用主类包路径以符合项目结构（致命，查半天）
- 移除配置文件中不再使用的 MQ 消费者限流配置项

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/HannoteCountBizApplication.java

@@ -1,4 +1,4 @@
-package com.hanserwei.hannote.count.biz.domain;
+package com.hanserwei.hannote.count.biz;
 
 import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/constant/MQConstants.java

@@ -0,0 +1,15 @@
+package com.hanserwei.hannote.count.biz.constant;
+
+public interface MQConstants {
+
+    /**
+     * Topic: 关注数计数
+     */
+    String TOPIC_COUNT_FOLLOWING = "CountFollowingTopic";
+
+    /**
+     * Topic: 粉丝数计数
+     */
+    String TOPIC_COUNT_FANS = "CountFansTopic";
+
+}

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/consumer/CountFansConsumer.java

@@ -0,0 +1,20 @@
+package com.hanserwei.hannote.count.biz.consumer;
+
+import com.hanserwei.hannote.count.biz.constant.MQConstants;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
+import org.apache.rocketmq.spring.core.RocketMQListener;
+import org.springframework.stereotype.Component;
+
+@Component
+@RocketMQMessageListener(
+        consumerGroup = "han_note_group_" + MQConstants.TOPIC_COUNT_FANS,
+        topic = MQConstants.TOPIC_COUNT_FANS
+)
+@Slf4j
+public class CountFansConsumer implements RocketMQListener<String> {
+    @Override
+    public void onMessage(String body) {
+        log.info("## 消费了 MQ [计数：粉丝数]: {}", body);
+    }
+}

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/consumer/CountFollowingConsumer.java

@@ -0,0 +1,20 @@
+package com.hanserwei.hannote.count.biz.consumer;
+
+import com.hanserwei.hannote.count.biz.constant.MQConstants;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
+import org.apache.rocketmq.spring.core.RocketMQListener;
+import org.springframework.stereotype.Component;
+
+@Component
+@RocketMQMessageListener(
+        consumerGroup = "han_note_group_" + MQConstants.TOPIC_COUNT_FOLLOWING,
+        topic = MQConstants.TOPIC_COUNT_FOLLOWING
+)
+@Slf4j
+public class CountFollowingConsumer implements RocketMQListener<String> {
+    @Override
+    public void onMessage(String body) {
+        log.info("## 消费了 MQ [计数：关注数]: {}", body);
+    }
+}

han-note-count/han-note-count-biz/src/main/resources/application.yml

@@ -28,7 +28,4 @@ mybatis-plus:
     log-impl: org.apache.ibatis.logging.slf4j.Slf4jImpl
   global-config:
     banner: false
-  mapper-locations: classpath*:/mapperxml/*.xml
-mq-consumer: # MQ 消费者
-  follow-unfollow: # 关注、取关
-    rate-limit: 5000 # 每秒限流阈值
+  mapper-locations: classpath*:/mapperxml/*.xml