styles loader for "tailwind" css

[naturallymitchell]

for current theme, class/body.txt,

bg-grey-light
font-sans
leading-normal
tracking-normal

would output as https://github.com/foundpatterns/base-theme/blob/165d95e5d06065e4ccc016d780bf344b99b0307a/base.html#L65

load each tag/tagged-id 's txt file serialize the table with an arg separator, in this case a space similar to the events.txt load them as a list, then output them to the html tag classes string

we need to have id's for every tag