Proper handling of webr chunks

[boshek]

This issue is a follow up from this discussion: posit-dev/positron#9446 (reply in thread)

The feature request is for support webr/pyodide chunks and interactively treat them identically to R/python chunks respectively. "Support" here would mean the ability to run code in the codes and have proper syntax highlighting.

For example with normal R chunks in positron we might see something like this:

but when we create a webr chunk we lose the code running ability and the syntax highlighting:

Is this something this extension would consider supporting? Alternatively is there a workaround to make working with quarto-live code a bit more friendly?

[juliasilge]

What we might need to do is make a way for the quarto-live Quarto extension to say something about what the VS Code extension here should do with these kinds of chunks. We could hard-code the mapping here in the extension, but that has some real downsides.

The goal would be to create the right kind of virtual document underneath, to provide language features.