feat(xo): add getconfig type

[Nkmol]

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• Provide a URL to documentation or source code which provides context for the suggested changes: Added as part of 0.39 (https://github.com/xojs/xo/releases/tag/v0.39.0) and undocumented but publicly exposed and useful for programmtically debuggig (Add --print-config flag xojs/xo#529).
• If this PR brings the type definitions up to date with a new version of the JS library, update the version number in the header.

[typescript-bot]

@Nkmol Thank you for submitting this PR!

This is a live comment which I will keep updated.

1 package in this PR

• xo — on npm, on unpkg
  • owner-approval: @peterblazejewicz

Code Reviews

Because you edited one package and updated the tests (👏), I can help you merge this PR once someone else signs off on it.

You can test the changes of this PR in the Playground.

Status

• ✅ No merge conflicts
• ✅ Continuous integration tests have passed
• ✅ Most recent commit is approved by type definition owners, DT maintainers or others

All of the items on the list are green. To merge, you need to post a comment including the string "Ready to merge" to bring in your changes.

---

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[typescript-bot]

🔔 @peterblazejewicz @shian15810 — please review this PR in the next few days. Be sure to explicitly select Approve or Request Changes in the GitHub UI so I know what's going on.

[peterblazejewicz]

LGTM!
@Nkmol thanks!

[typescript-bot]

@Nkmol: Everything looks good here. I am ready to merge this PR (at e6abe72) on your behalf whenever you think it's ready.

If you'd like that to happen, please post a comment saying:

Ready to merge

and I'll merge this PR almost instantly. Thanks for helping out! ❤️

(@peterblazejewicz, @shian15810: you can do this too.)

[Nkmol]

Ready to merge