Add submission # 5260

#5260

Author: ArduinoBot

registry.txt

@@ -7517,3 +7517,4 @@ https://github.com/adafruit/Adafruit_INA3221.git|Recommended|Adafruit INA3221 Li
 https://github.com/smelpro/Smelpro_Macaron.git|Contributed|Smelpro Macaron Library
 https://github.com/Garfius/cliSerialMenu.git|Contributed|Menu-UI
 https://github.com/ncmreynolds/milesTag.git|Contributed|milesTag
+https://github.com/nhjschulz/cfsm.git|Contributed|CFSM