Dap ux enhancements

[mverzilli]

Opening this PR for internal review. Note: it depends on a peer changeset to be merged to the Noir repo (will link once I push that one)

[ggiraldez]

Other than the eslint errors (which made reviewing harder than necessary), I left a question re: how does this work with existing launch.json configurations.

[ggiraldez]

Shouldn't we run preflight checks for user provided configurations as well? I'm not sure how this works, but if config.program probably means the configuration comes from the launch.json file. I think it makes sense to do a preflight using the provided configuration. Otherwise, this only applies to "new" debugging configurations.

[mverzilli]

This line is actually a remnant of some earlier tests, but with the final implementation it's effectively dead code, because:

1. Our launch json doesn't include define program.
2. We're never attaching to a running debugger.

So I removed this line.

But you're right in that this is ignoring projectFolder when provided through a launch.json.

This makes me think though, that we should remove the requirement for projectFolder from the template launch.json, because in the most common case you will want it to be discovered based on the file you want to debug. We can still allow people to manually specify tho, so I'll add those tweaks.

[mverzilli]

Other than the eslint errors (which made reviewing harder than necessary), I left a question re: how does this work with existing launch.json configurations.

Oops sorry about the linting, I didn't know there was a project linter (I should have!) and I didn't stick around the PR long enough to see all those horrible messages 🙈