Support ESLint 8.x

[MichaelDeBoey]

ESLint v8.0.0 is released 🎉

It would be awesome to have official ESLint 8 support. 👊
I'm happy to help where I can of course 🙂

[ljharb]

It'd be great to tee up a PR, but we won't officially support anything until v8 is actually released (betas don't count any more than rc's do).

[fgblomqvist]

It's officially out now, anything blocking the PR?

[MichaelDeBoey]

@fgblomqvist Having some time to update is all, is the only thing that's blocking me now 😉

Will be later tonight or so

Also: check the PR for status of all dependent PRs