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Is your feature request related to a problem? Please describe.
When debugging my tests, it is frustrating that I am unable to use C++ natvis visualisation files. This is because they are added to my launch configurations in the visualizerFile section.

I am unable to use my launch configurations as it's unclear if/how the executable name and arguments are passed to the configuration.

Describe the solution you'd like
I'd like to either be able to use a generic launch configuration with this extension filling in the appropriate executable and command line arguments, or be able to specify all the launch configuration options in the debug.configTemplate section.

Describe alternatives you've considered
There is a workaround - copy the .natvis files from my project into ~/.vscode(-insiders)/extensions/ms-vscode.cpptools-x.y.z/debugAdapters/vsdbg/bin/Visualizers but this will frequently break due to the cpptools extension being updated.

Additional context
None