Add submission # 512

ArduinoBot · ArduinoBot · commit 572f90cc2597 · 2021-09-22T09:55:36.000Z
#512
diff --git a/registry.txt b/registry.txt
@@ -4351,3 +4351,4 @@ https://gitlab.com/tamctec/ft62x6-arduino.git|Contributed|TAMC_FT62X6
 https://github.com/Phoenix1747/MQ135.git|Contributed|MQ135
 https://github.com/khoih-prog/ESP8266_PWM.git|Contributed|ESP8266_PWM
 https://github.com/khoih-prog/Portenta_H7_PWM.git|Contributed|Portenta_H7_PWM
+https://github.com/tgtakaoka/libcli.git|Contributed|libcli
