Generate a compile_commands.json for a specific target

Reconfiguring is not that bad, but it does take time and interrupts the flow.
Multiple build trees could work, but I’m not sure how we’d integrate that into Visual Studio Code.
Currently we can just start the PC Lint Plus task, regardless of the configuration and such being selected.

I think something like <target>.compile_commands.json would do. Preferably the name/path should be retrievable via a generator expression, as this can then be used to pass the path to the configuration script provided with PC Lint Plus. Where should I propose such a feature request?