Support eslint 9

[xamoulin]

Add support to version 9 of eslint.

[Limegrass]

Thanks for the issue. This has been in my radar, and I just hadn't got around to looking into whether the new config format was backwards compatible or not. Definitely helps to know that someone is trying to use it with ESLint 9 l, so I can start taking a look into this week when I find some time.

[Limegrass]

I should have updated this earlier, but I took a brief look at this last week. It seems like typescript-eslint and eslint-plugin-import has yet to support ESLint 9, which makes it a bit hard to dogfood this plugin given that it seems like the new config format is not backwards compatible with the old config format, making it hard to upgrade to ESLint 9 in this package.

Holding off on working on this until the other plugins includes support.