[Library Manager] Please Add Finite-State-Machine Library

[Arekushi]

Hi, please add our library into your library manager.

Repository:
https://github.com/Arekushi/Finite-State-Machine-Arduino

Library.properties:
https://github.com/Arekushi/Finite-State-Machine-Arduino/blob/master/library.properties

Thanks for listening.

[cmaglie]

Done.