Add submission # 493

#493

Author: ArduinoBot

registry.txt

@@ -4339,3 +4339,4 @@ https://github.com/MajicDesigns/MD_Stepper.git|Contributed|MD_Stepper
 https://github.com/BreadBoardMates/Arduino-Mates-Controller.git|Contributed|Mates Controller
 https://github.com/DFRobot/DFRobot_DHT20.git|Contributed|DFRobot_DHT20
 https://github.com/newdigate/teensy-audio-launch-ctrl.git|Contributed|TeensyAudioLaunchCtrl
+https://github.com/khoih-prog/Portenta_H7_ISR_Servo.git|Contributed|Portenta_H7_ISR_Servo