Add submission # 2193

#2193

Author: ArduinoBot

registry.txt

@@ -5493,3 +5493,4 @@ https://github.com/khoih-prog/HTTPS_Server_Generic.git|Contributed|HTTPS_Server_
 https://github.com/wicked-rainman/ESP32Dispatcher.git|Contributed|ESP32Dispatcher
 https://github.com/RobTillaart/RAIN.git|Contributed|RAIN
 https://github.com/joseguerra3000/AD74xx.git|Contributed|AD74xx
+https://github.com/RobTillaart/MSP300.git|Contributed|MSP300