Add aria-current variant

[MichaelAllenWarner]

The new built-in aria- variants are great!

I wonder if it might make sense to add one for aria-current. Although it isn't a boolean attribute, it almost always functions like one in practice. What I mean is: probably ~99% of the time, a given element should either have one specific non-"false" value (like "page") or have a "false"/missing value; rarely (if ever) might an element have more than one possible non-"false" value.

So for styling purposes, a selector like [aria-current]:not([aria-current="false"]) might suffice. (I've been using that as a custom Tailwind variant for some time now.)

[Flowko]

for anyone finding this, you can use https://www.npmjs.com/package/tailwindcss-aria-attributes