Generate classes at compile time

[thien-do]

Currently classes (and the instances of Style) are generated at run time. Performance-wise, it could be better if we can do it at compile time (and technically it's possible to do so).

Could be something like a Babel plugin or a Webpack loader.

[thien-do]

https://github.com/dvkndn/typed-tailwind#compile-time-usage-with-webpack done @hacknug @nguyenhuedang