docs: add MES upload status tracking design spec

wanshenmean

昨天 406a7dd7ed6d1215b739a80453e2bbde0f8af643

 Code/WCS/WIDESEAWCS_Server/WIDESEAWCS_Communicator/SerialPortComm/SerialPortCommunicator.cs

@@ -120,7 +120,7 @@
            }
            catch (Exception ex)
            {

                LogNet.WriteException(Name, $"串口数据接收异常，串口号:{_serialPortName}", ex);
            }
        }