Add Pug files support

[ajimix]

Would be great to add support for Pug .pug files.

There is already a prettier-pug plugin which works great. But it doesn't do anything with Tailwind

[ajimix]

Seems to be possible to be done easily as the official prettier-pug plugin has a parser

import prettierParserPug from '@prettier/plugin-pug'

prettierParserPug.parsers.pug.parse

But I didn't manage to get it working with this extension :( the pug code never gets handled by this extension for some reason.