Does `quarto` support converting custom mime-types to pdf? Maybe something like [preprocessors](https://nbconvert.readthedocs.io/en/latest/nbconvert_library.html#Custom-Preprocessors) in nbconvert?

Currently if I have a custom mime-type it just returns the object type in PDF and Docx formats.
2022-05-18T09:18:21Z
divyansshhh
Future
open
Converting custom Mime-Types to PDF and docx
https://github.com/quarto-dev/quarto-cli/issues/919