PipeScript should support Pug

[StartAutomating]

Everyone loves pugs.

Pug should be defined as a Language, with the following properties:

$LanguageName = 'Pug'
$FilePattern = '\.pug$'
$IsTemplateLanguage = $true
$WorksWith = 'Express','React'
$Install = { npm install pug @args }
$Website = 'https://pugjs.org/'