feat: add timesync command

services/mqttaccess/mqtt_provider.go

@@ -50,7 +50,7 @@ func (mp *MQTTProvider) OnDeviceOnline(args rpcs.ArgsGetOnline, VendorId string)
 	cmdArgs.Params = map[string]interface{}{
 		"value": time.Now().Unix(),
 	}
-	err = server.RPCCallByName(nil, rpcs.MQTTAccessName, "MQTTAccess.SendCommand", cmdArgs, &cReply)
+	err = server.RPCCallByName(nil, rpcs.MQTTAccessName, "Access.SendCommand", cmdArgs, &cReply)
 	if err != nil {
 		server.Log.Errorf("发送时间同步指令：%v", cmdArgs, err)
 	}