Add submission # 5257

#5257

Author: ArduinoBot

registry.txt

@@ -7514,3 +7514,4 @@ https://github.com/MINDS-i/MINDS-i-Utils.git|Contributed|MINDS-i-Utils
 https://github.com/bitbank2/bb_epaper.git|Contributed|bb_epaper
 https://github.com/Kei0208/RX8900.git|Contributed|RX8900
 https://github.com/adafruit/Adafruit_INA3221.git|Recommended|Adafruit INA3221 Library
+https://github.com/smelpro/Smelpro_Macaron.git|Contributed|Smelpro Macaron Library