Add support and document about New Edge Chromium

[Christophe Dervieux]

New Edge browser is officially out and it is based on Chromium now, offering the Chrome Devtools Protocol - same one as in Chrome or Chromium headless.

Here are some ressources on this new version:

• Edge Devtools on Chromium
• Edge Devtools Protocol same as Chrome Devtools protocol
• puppeteer can be used

I already tested a few examples and it works with crrri just by replacing HEADLESS_CHROME env var or changing the path to browser. Even perform_with_chrome works fine.

How do we want to support it ?

• Just documenting this ?
• new sets of functions that would be wrapper to default to Edge ?

[Romain Lesur]

IMO, documenting it should be sufficient.