[Nova 4] restores Tailwind styles

[vesper8]

Something changed in Nova 4 that breaks a lot of Tailwind classes. Basically, any class that is not used somewhere in Nova v4 won't be available inside 3rd party fields, cards, tools, etc.

It's explained in https://github.com/laravel/nova-issues/issues/4061#issuecomment-1108865028.

Fixing this involves adding tailwind to the package and using a way of "scoping" the field with a custom class.

Jess Archer's tweet here helped with the solution: https://twitter.com/jessarchercodes/status/1515139491794599939?

I've made the changes below. But for some reason I am having difficulty building the dist files because of the way you link to laravel-nova inside mix.js

You should be able to build the dist files and then test that the Tailwind styles are back to working like they were before.

Cheers!

[mbardelmeijer]

@dillingham could you perhaps take a look at this one and tag a release if you agree? Thanks 🙏