Go live button support

[Joelsuperstar]

Describe the feature
Companion already has support for the "start streaming" button in OBS. But not the "go live button".

But it is also possible to login in OBS in a YouTube account. It is now possible to manege the different broadcasts on YouTube. But to start the stream, I have to press the "go live" button in OBS or on YouTube. Will it be possible to automate that? because this is a button within OBS that I have to press. Other buttons are already supported..

It is possible to do it with the YouTube plugin, but the implementation is different. I have to specify the correct stream in the YouTube plugin then... And there is no point in doing that each time. It is easier to select the correct stream in OBS, and that the plugin starts that stream (because it then knows the correct stream).

[bryce-seifert]

This is not currently implemented with obs-websocket, so it would take that getting supported first before we could implement it there.

Looks like there is an open issue over there, but not any movement on it:
obsproject/obs-websocket#830