Allow specifying a default target for debugging tests

[Nerixyz]

When debugging tests, having the quick picker open up repeatedly is annoying. I'd like to specify a default target that gets used when debugging tests.
I've implemented an MVP in Nerixyz@21392c9. You set cmake.ctest.testSuiteDelimiter.debugLaunchTarget to the target name (seems like that's the only decent identifier) and if the target exists, it will be used - otherwise the picker is shown. I noticed

vscode-cmake-tools/src/ctest.ts

Line 933 in ed6d9ad

// TODO: we can remember the last choice once the CMake side panel work is done

... but I don't know about the status of that, and this would require choosing the target once for every session. Does my MVP go in the right direction to open a PR? (the wording might be a bit confusing as CMake also has "targets", but that doesn't impact the functionality)

[gcampbell-msft]

@Nerixyz The best suggestion that I can give is to create a launch.json so that you don't have to utilize the quick debug configuration that our extension uses, but you can have full customization over any launch.json configuration.

[Nerixyz]

I do have a launch.json, but I have multiple configurations in there (one for regular debugging and one for tests at least). With multiple configurations, the popup to select a configuration will always show. I'd want the extension to select the one I intended for testing automatically.

[gcampbell-msft]

To make sure I understand, you'd like to be able to set a setting in your VS Code setting to define which launch target you want to select whenever you start to debug?

This seems a reasonable suggestion to me. I took a quick look at your MVP and if you're interested in creating a PR we'd be happy to take a contribution. There may be some iteration on the PR, but we'd be happy to consider any changes you suggest.

[Nerixyz]

you'd like to be able to set a setting in your VS Code setting to define which launch target you want to select whenever you start to debug?

Yes. Or rather: I'd like to avoid the popup for the launch configuration selection when repeatedly debugging a test.

[gcampbell-msft]

Understood. We'd be happy to take a look at a PR contribution. Additionally, if you want us to track this, it'd be best if you created an issue so that we can prioritize it correctly. Thanks!