Added Example files from Waveshare repo

src/WS_Serial.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include "WS_Information.h"
+#include "WS_RS485.h"
+#include "WS_CAN.h"
+
+void Serial_Init();         // Example Initialize the system serial port and RS485
+void Serial_Loop();         // Read RS485 data, parse and control relays