New rule: forbid input type=number?

[danielnixon]

Motivation: https://technology.blog.gov.uk/2020/02/24/why-the-gov-uk-design-system-team-changed-the-input-type-for-numbers/

[jessebeach]

I appreciate the motivation, but I can't bring myself to agree that this library should have an opinion on elements in this way. Browser implementations will vary. This plugin should help an author create a valid Accessibility Tree shape, according to the ARIA standards.