feat: @eslint/compat package

[nzakas]

This adds a @eslint/compat package with the following functions:

• fixupRule() - used to wrap rules in a compatibility layer
• fixupPluginRules() - used to wrap all rules in a plugin
• fixupConfigRules() - used to wrap all rules in all plugins in a config array

View the README for more details.

closes #4

[mdjermanovic]

I prepared a PR to check this in action with eslint-plugin-react in the eslint.org repo: eslint/eslint.org#561

[aladdin-add]

LGTM! 💯

[mdjermanovic]

LGTM, thanks! Just not sure if it's safe to merge until we resolve #8.

[mdjermanovic]

Also, should we maybe do #3 (comment) in this package too?

[nzakas]

It's safe to merge. The CI is doing some unneeded work but nothing consequential.

I'm going to go through and update all of the packages at in a separate PR.