Add submission # 5809

#5809

Author: ArduinoBot

registry.txt

@@ -7806,3 +7806,4 @@ https://github.com/Soft-Collection/SCPeriod.git|Contributed|SCPeriod
 https://github.com/Soft-Collection/SCButton.git|Contributed|SCButton
 https://github.com/ESP32Async/ESPAsyncTCP.git|Contributed|ESP Async TCP
 https://github.com/p1ngb4ck/MCP4461.git|Contributed|MCP4461
+https://github.com/RobTillaart/millis64.git|Contributed|millis64