[FEATURE REQUEST] Find an automated way to archive past courses

[jonjoncardoso]

I use the same website for different iterations of my course (see DS105).

Since my courses are offered twice each academic year, I've resorted to using CSS and JavaScript to differentiate archived pages from the current ones. This involves replacing Quarto's default menu with a version that reflects what students saw when the archived course was active, along with aesthetic changes to prevent confusion between archived and current courses.

Currently, my method is very hacky. I didn't even port it to this template repository because it's ugly 🙃 . Ideally, I'd like to achieve this directly through Quarto extensions (though I'm not sure it's feasible).

If anyone who happens to read this issue has any suggestions of how to achieve that, let me know!