feat(websocket): 实现基于Redis的消息队列WebSocket通信功能

- 添加Redis消息队列配置类RedisMessageConfig，实现消息监听容器
- 重构KitWsMessage消息结构，将数据字段改为内部Data类并添加getter/setter
- 集成RedisTemplate实现WebSocket消息发布功能，支持主动推送和实时聊天
- 实现WsMessageSubscriber消息订阅者，处理来自Redis的消息队列数据
- 添加WebSocket业务代码常量接口KitWsBizCodeConst
- 更新前端Demo组件适配新的消息格式和业务代码参数
- 优化WebSocket服务器端消息处理逻辑和错误处理机制

cutejava-front/src/views/componentsDemo/util/KitWsClientDemo.vue

@@ -63,19 +63,19 @@ export default {
         console.info('=============== KitWsClient:event', event)
       }, function(msgEvent) {
         console.info('=============== KitWsClient:msgEvent', msgEvent)
-        that.responseTxt = that.responseTxt + msgEvent.data + ''
+        that.responseTxt = that.responseTxt + msgEvent.data + '\n'
       })
     },
     onSendClick() {
-      if (this.client) {
-        this.client.sendData({
-          msgType: 'sc',
-          userIds: ['123456'],
-          content: this.sendVal
-        })
-        this.client.sendData({
-          msgType: 'gc',
-          content: this.sendVal
+      const that = this
+      if (that.client) {
+        that.client.sendData({
+          bizCode: '101',
+          data: {
+            fromUsername: that.user.username,
+            toUsername: null,
+            message: that.sendVal
+          }
         })
       }
     },