Add support for headless Chrome

[SergeyPirogov]

As per https://habr.com/ru/post/503476/

[MohabMohie]

I'm actually looking forward to that feature... and after reading a translated version of the above article I think working with screencast and chrome devtools would be simpler with webdriver 4.0
do you think that it makes sense to wait for it or to build a custom implementation?

I have a test automation engine that's using your library for video recording, and I've been searching for a cross-platform cross-browser method to record headless test executions... that's why I'm happy to join the discussion.

[SergeyPirogov]

@MohabMohie Crossbrowser? I am not sure. I think it's a good feature, but there is no date for 4.0 release