feature: pug translate support
Just like `:markdown-it` but `:translate-it` or something - should re-use our existing translate/localization stuff).

After this filter is created, we should wrap all existing sample pages `p` tag blocks with `:translate-it` blocks.  For example, `template/views/home.pug` has a bunch of filler text we should wrap just as an example so it gets translated.

If `:i18n-t` is a better naming convention or something else, I'm open.

This package should be published to an @ladjs GitHub org repo and with a generic name (not @ladjs scoped).  However NPM owner access to the package should be granted to core team (@omgimalexis and @niftylettuce via `npm owner add <name>`).

References:
* <https://pugjs.org/language/filters.html>