Put all the States + Events in readme or node-red documentation

[quacksire]

This would be helpful for newcomers

[ybizeul]

Good point.

I will add a link to the official documentations :

Events from Stream Deck : https://developer.elgato.com/documentation/stream-deck/sdk/events-received/

Events to Stream Deck : https://developer.elgato.com/documentation/stream-deck/sdk/events-sent/