Support ESLint flat config

[filiptammergard]

Hey!

Thanks for a useful plugin. Right now, only eslintrc format is supported. In ESLint v9, the new flat format will be the default: https://eslint.org/blog/2023/10/flat-config-rollout-plans/

More and more projects are migrating to flat config format as a preparation. Do you have plans for supporting flat config in this plugin?

I'm willing to help out if this is something you want to do.

[JounQin]

Welcome, @filiptammergard ! PR welcome to support ESLint flat config.

[sdavids]

Also, update README with flat config example(s).

[filiptammergard]

Also, update README with flat config example(s).

Definitely. Progress can be followed in this PR: #592