Send signal to OS/socket when Play/Pause

Hey libreelec folks,
I have a Libreelec instance on a RPi running.

The RPi has the possibility to switch on/off 433MHz remote power plug switches.
I have the very cool idea to switch on/off a lamp, when I pause/play Kodi.

Therefore Kodi had to communicate with another script running on the RPi in Libreelec.

My Question: Is it possible that Kodi send signals to the OS on certain actions?
If yes: What would be the best way to implement this? Maybe over an Addon?

Any suggestions are very welcome, thank you.

these two links are exactly what I'm looking for, thank you very much.

For using the GPIO ports you need root privileges, kodi isn't running as root or not?

So I need a extra service as root and have to communicate via kodi_Callback with this service.

great, I didn't thought it would be that easy.
Thanks for your support and big thumbs up to OpenSource!