Remove dependency on is-url-superb

[davilima6]

Addresses the proposed fix in #120 by providing a custom Node URL-based implementation for isUrl.

This PR contains:

• bugfix
• feature
• refactor
• tests
• documentation
• metadata

Breaking Changes?

• yes
• no

If yes, please describe the breakage.

Please Describe Your Changes

[shellscape]

Thanks for taking the initiative here. I'm not keen on adding additional code to maintain. I know it's a simple function, but that means it needs tests and such as well. I'd much rather use a package that had its own tests that I didn't have to maintain.

[davilima6]

I think adding tests here could be worth the price of avoiding a situation like this from happening again. I think only the protocol-relative URLs condition branch needs to be tested. What do you think?

[davilima6]

Another issue is that CI fails because package depends on itself (on an outdated version, Idk if intentionally). I see it's imported for performance tests. Would you have any suggestion on how to sort out this one?

[davilima6]

Moving PR to draft while we don't have an alternative for 089a196

[shellscape]

Closing in favor of #125. As noted on your other PR, I do sincerely and truthfully appreciate the work you put in on this.