Add submission # 6750

#6750

Author: ArduinoBot

registry.txt

@@ -8261,3 +8261,4 @@ https://github.com/adafruit/Adafruit_BMP5xx.git|Recommended|Adafruit BMP5xx Libr
 https://github.com/jaikulk14/QuickAPConnect.git|Contributed|QuickAPConnect
 https://github.com/tobiastl/LD2412.git|Contributed|LD2412
 https://github.com/RileyCornelius/FormatLog.git|Contributed|FormatLog
+https://github.com/yosob/SL_simpletask.git|Contributed|SL_simpletask