[feature request] YAML shortcut for endfloat

Many academic journals in, eg, psychology require placing figures and tables at the end of the manuscript for review. I use the endfloat package to do this, as so:

header-includes:
    - \usepackage{endfloat}

But I'm not a psychologist, and only very occasionally publish in journals that require moving the figures and tables around. So every time I have to mess around with a bunch of web searches until I find the magic combination of keywords that reminds me of endfloat.

So it would be nice to have a shortcut option, included in the Quarto docs, that might look like this:

endfloat: true

If the output format is PDF, this would simply include \usepackage{endfloat} in the header. And otherwise it would be ignored.