add shady link regex for check url with ips

[sairuss7]

resolve #260

[PierreDemailly]

Hi @sairuss7 thanks for contributing 👍

Could not we use simpler regexp? Maybe with the addition of a new constant kShadyLinkExcludeRegExpp to exclude local IPs (if needed, just an idea)

Moreover please add unit tests (test/probes/isLiteral.spec.js) and update the docs which only refer to suspicious extensions, we should add that it checks for IPs domains.

[jean-michelet]

Could not we use simpler regexp?

Developing high-quality regexps requires a great amount of rigor, so I think we should refer to an official recommendation.

[sairuss7]

@PierreDemailly Thanks for the feedback Pierre okay I'll do it better, but for simplifying the regex, I don't really have an idea. Maybe I can do it with a tool.

[fraxken]

RegExp seems ok to me, but we should add new tests on the probe at least

[fraxken]

@allcontributors please add @sairuss7 for code

[allcontributors]

@fraxken

I've put up a pull request to add @sairuss7! 🎉