Add submission # 3720

#3720

Author: ArduinoBot

registry.txt

@@ -6565,3 +6565,4 @@ https://github.com/amiga68k/electuno.git|Contributed|electuno
 https://github.com/s-light/slight_mapping.git|Contributed|slight_mapping
 https://github.com/s-light/slight_easing.git|Contributed|slight_easing
 https://github.com/NicolasNewman/ArgParse.git|Contributed|ArgParse
+https://github.com/alireza7575/MKS_SERVO57.git|Contributed|MKS_SERVO57