feat: add no-reference-like-urls rule

[TKDev7]

Prerequisites checklist

• I have read the contributing guidelines.

What is the purpose of this pull request?

Add a new rule, no-reference-like-url, to disallow inline links or images when the URL matches a defined reference identifier.

What changes did you make? (Give an overview)

Implemented the no-reference-like-url rule with autofix, added documentation, and included tests.

Related Issues

Fixes #419

Is there anything you'd like reviewers to focus on?

[snitin315]

LGTM, thanks. Leaving it open for 2nd review.

[JoshuaKGoldberg]

Looking good! No requests from me that aren't already noted. Thanks! 🚀

[nzakas]

@lumirlumir please take a look at the responses to your comments.

[lumirlumir]

Sorry for the delay on my end. I've responded to your previous comment.

[lumirlumir]

Nice improvements! I’ve left a few comments about some other cases that are missing.

[lumirlumir]

LGTM, Would like @snitin315 to verify the changes before merging.

[snitin315]

The following case doesn't report any errors, is this expected behavior?

<!-- eslint markdown/no-reference-like-urls: "error" -->

[Mercury](  mercury) is the first planet from the sun.

[mercury]: https://example.com/mercury/

[TKDev7]

@snitin315 This should be fixed now.