Support negative globs for test_sources section in project file

[sfc-gh-mgalindo]

Description of the feature request:

There are cases when valid utility classes are defined under a test file declared under the test_sources section. It would be nice to be able to do something like

test_sources:
  SomeDir/src/test/**
  -SomeDir/src/test/specific/java/file.jva

This comes after I run in some issues with classes declared under a test directory in #6641. The issue has a pretty long winded explanation thats not worth reading but it the tl;dr is I didn't notice a source being under src/test instead of src/main and was not being indexed and that send me down a rabbit hole to find an issue with indexing that wasn't really an issue. I understand having non test classes under src/test is a pretty big code smell, but I'm working in a large codebase whith a bunch of legacy stuff that I dont control.

Which category does this issue belong to?

Intellij

What underlying problem are you trying to solve with this feature?

No response

What operating system, Intellij IDE and programming languages are you using? Please provide specific versions.

No response

Have you found anything relevant by searching the web?

No response

Any other information, logs, or outputs that you want to share?

No response

[sfc-gh-mgalindo]

Looks like this is a bit more complicated to implement that originally thought. Sources are tracked at the directory level and not file level, so excluding individual files seems like a non starter here