feat:Websocket服务拆到单独服务，主后台保持单工通信

backend/src/main/java/com/openisle/config/ShardInfo.java

@@ -0,0 +1,14 @@
+package com.openisle.config;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class ShardInfo {
+    private int shardIndex;
+    private String queueName;
+    private String routingKey;
+}