Add .code-workspace example for "Mono Repo Set‐up Guide" - "Separate Virtual Environments" scenario

[tibbe]

In the Mono Repo Set‐up Guide in "Scenario 2: Separate Virtual Environments" there's a link to the Responsible AI Toolbox repo, as an example of a monorepo using a multi-root workspace. However, there's no .code-workspace file in the example repo, suggesting that this is not in fact an example of a multi-root workspace.

Perhaps the repo changed since it was introduced as an example.

/cc @luabud

[luabud]

Thanks for bringing this up! I meant to link it as an example of a repo that could be set up as multi-root workspace, but the wording is currently confusing indeed. I'll update it to make that clearer and will see if it'd be helpful to include an example of what .code-workspace would look like if one followed the steps there in that repo!

[tibbe]

That would be great, especially a link to a repo that actually uses a multi-root workspace.