refactor(接口测试): WebSocket增加定时心跳检查防止超时

--bug=1018491 --user=赵勇 【接口测试】github#18046，接口自动化，在导入的接口，配置“前置操作--等待控制器”时间设置为5分钟，“调试”接口最后没显示执行结果 https://www.tapd.cn/55049933/s/1325162

api-test/backend/src/main/java/io/metersphere/websocket/IndexWebSocket.java

@@ -1,10 +1,11 @@
 package io.metersphere.websocket;
 
-import io.metersphere.commons.utils.JSON;
-import io.metersphere.utils.LoggerUtil;
 import io.metersphere.api.dto.MsgDTO;
+import io.metersphere.commons.utils.JSON;
 import io.metersphere.commons.utils.WebSocketUtil;
+import io.metersphere.utils.LoggerUtil;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 
 import javax.websocket.*;
@@ -60,4 +61,12 @@ public class IndexWebSocket {
     public void onError(Session session, Throwable throwable) throws IOException {
         session.close();
     }
+
+    /**
+     * 每一分钟群发一次心跳检查
+     */
+    @Scheduled(cron = "0 0/1 * * * ?")
+    public void heartbeatCheck() {
+        WebSocketUtil.sendMessageAll("heartbeat check");
+    }
 }