Suggestion: make ignored_modules a tuple of symbols, instead of a tuple of modules

[charleskawczynski]

On issue I've run into is that JET will complain about (perhaps deeply nested) indirect dependencies, and that means that one has to add those dependencies to the Project toml in order to ignore those modules. It might be really nice if ignored_modules instead accepted Symbols, so that no additional dependencies are required.

[charleskawczynski]

I'm just curious, is there any chance that this issue gets fixed? (cc @aviatesk).

We've been trying to remove CUDA as a direct dependency in some packages, and requiring CUDA just pass this test is a bit unfortunate.