feat: add astroturf vite plugin

[azat-io]

Added plugin for Vite

Currently we have the same problem as in Parcel with saving temporary css files #610

It means that you have to use this plugin with some delete plugin as here #111 (comment)

[jquense]

This is great, I'm not sure if it should go here since I don't use vite, and would be afraid it'd break or get out of date without realizing

[azat-io]

@jquense There is webpack loader in this repo, so why not have Vite plugin here?
Also, I can can try to add some tests and some code with Vite to /example folder.

[jquense]

it's just a matter of what i can reasonably maintain. I use webpack so i can be sure the webpack loader is up to date, tested and working. I don't use Vite and don't know it's plugin system at all so i'd not be able to update it, fix bugs, or answer questions about it

[azat-io]

@jquense Okay, I'll move this plugin to my repo and create pull request to Astroturf docs