Add submission # 5689

#5689

Author: ArduinoBot

registry.txt

@@ -7756,3 +7756,4 @@ https://github.com/rescenic/rescenicio.git|Contributed|RescenicIO
 https://github.com/kelasrobot/FonnteArduino.git|Contributed|FonnteArduino
 https://github.com/JokoArdh/inIo.git|Contributed|inIo
 https://github.com/robbywm/RobbyIO.git|Contributed|RobbyIO
+https://github.com/cakraawijaya/MQ2_LPG.git|Contributed|MQ2_LPG