[Feature Request] PHPCS ruleset for Tailwind

[jonshipman]

Referencing https://github.com/francoismassart/eslint-plugin-tailwindcss, it would be helpful to have phpcs linting available to PHP files. Probably outside the scope of this library, but wanted to draw some eyes here as this is the only PHP + Tailwind project I've stumbled across on Github.

Helps that this lib is already on composer and could just include rulesets as a part of the package.