假装启动洗衣机

websocket测试

POST

http://interface-cs.langlizihotel.com/hk-boot/open/miniapp/laundry/laundryDevice/setcountdown

deviceId

string

示例：设备号

必填

countDown

string

剩余运行秒数，传0视为运行结束

必填

返回数据 ```javascript { "success": true, "message": "操作成功！", "code": 200, "result": "", "timestamp": 1656668982397 } ```