The VSCode packages contain a product.json which is used to determine
the extension and config dirs. When the package name is not known,
this change parses this file (using IFD) (which may appear in a few
places) and uses that to generate the paths.
This hopefully allows more VSCode derivatives to "just work" without
Home Manager updates.
Co-authored-by: andre4ik3 <andre4ik3@fastmail.com>