feature request: print preview

[jmetz]

Fantastic project 🙌 !
At the moment there's only one main showstopper that would stop me using this for a documentation-centric site - the
ability to do a print preview similar to in mdbook - that is have a print button that shows all of the documentation rendered
as something print-friendly.

In mdbook this is achieved by having the print-button link to the print.html page that simply renders all of the pages in
order, with page-breaks courtesy of <div style="break-before: page; page-break-before: always;"></div> elements after each section. So similar to how in some (usually older) websites there's a "single-page view".

[jmetz]

PS the current print-preview is not printing / saving to pdf friendly: