feat: Add execute command to handle Execute code lens

[phated]

Description

Problem*

Ref noir-lang/noir#2330

Summary*

This adds a nargo.execute command that will be triggered via the > Execute code lens.

Additional Context

PR Checklist*

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt on default settings.

[TomAFrench]

I'm building this with npm run package (and then selecting "Install Extension VSIX" in the sidebar) and running it with Nargo built from your PR. I'm not getting any display and a "Unable to locate any nargo binary. Did you install it?" error.

Should I be doing something different to test this?

[phated]

So the published extension doesn't work for you either? I use a custom absolute path to my nargo binary since I iterate on the features so I've not experienced this. Seems entirely unrelated to this PR

[TomAFrench]

Yeah, I really doubt it has anything to do with this PR. Just trying to get to a state where I can meaningfully test it.

[phated]

I'm guessing that your vscode shell doesn't have access to a nargo in its path. I'm going to see if I can replicate but you can also add a hardcoded path in settings.

[TomAFrench]

I don't get any errors on the published extension (v0.0.3) but nothing past syntax highlighting either. I've switched back to the locally installed extension and don't get the error anymore but no output either. Adding an explicit path causes no change.

[TomAFrench]

Ah ha! I've managed to get signs of life.

[TomAFrench]

Ok, I can execute circuits using this now.