Provide options to specify working directory for Quarto, .Rmd, notebooks

[juliasilge]

Folks coming from RStudio are used to having options for what their .Rmd and .qmd files use as the working directory:

Discussed in #4688

^{Originally posted by AndrewSkelton September 15, 2024}

Hi,

Typical behavior in RStudio was that when an Rmd file was open, paths in the notebook were relative to where the file was located, this doesn't seem to be the same in Positron. Is there a setting to enable that?

Thanks,

Andrew

In #2648 we changed the working directory for .ipynb files to default to the location of the notebook file, and this is like an analogous request for our other notebook-ish files.

RStudio offers this as an option:

I will say that personally I find this behavior for notebooks and notebook-adjacent things pretty confusing (it has surprised me more times than I would like to admit!) and I like that RStudio lets me opt out from this automatic mucking about with my working directory.

[jmcphers]

There's also an issue requesting that we do this for Python scripts. #3156