Add submission # 6552

#6552

Author: ArduinoBot

registry.txt

@@ -8285,3 +8285,4 @@ https://github.com/esharp17/Mecanum_Base.git|Contributed|MecanumBase
 https://github.com/aiplayuser/esp32easylib.git|Contributed|esp32easylib
 https://github.com/brianvarren/EEncoder.git|Contributed|EEncoder
 https://github.com/esharp17/INA219_Plus.git|Contributed|INA219_Plus
+https://github.com/beegee-tokyo/RAK_LPP.git|Contributed|RAK_LPP