Add exclusion filter for directories

[lshala]

This PR adds the possibility to exclude folders or files from the analysis. Specifically, it should be possible to filter either by strings or by regex.

[codecov]

Codecov Report

Attention: Patch coverage is 63.15789% with 7 lines in your changes missing coverage. Please review.

Project coverage is 76.18%. Comparing base (2b0474a) to head (1d35c26).

Files with missing lines	Patch %	Lines
...e/fraunhofer/aisec/cpg/TranslationConfiguration.kt	63.63%	4 Missing ⚠️
...tlin/de/fraunhofer/aisec/cpg/TranslationManager.kt	66.66%	2 Missing ⚠️
...s/kotlin/de/fraunhofer/aisec/cpg/test/TestUtils.kt	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...s/kotlin/de/fraunhofer/aisec/cpg/test/TestUtils.kt	70.21% <50.00%> (-1.37%)	⬇️
...tlin/de/fraunhofer/aisec/cpg/TranslationManager.kt	71.64% <66.66%> (-0.16%)	⬇️
...e/fraunhofer/aisec/cpg/TranslationConfiguration.kt	89.71% <63.63%> (-1.46%)	⬇️

... and 2 files with indirect coverage changes

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[oxisto]

I think this is not enough, I think you need to move the exclusion handling down to the file walk (or after the walk), because at this point here the locations are not "expanded". For example, if I set the source location "mypackage", which has a "tests" folder in it. In this case the exclusion filter filters based on mypackage, but not on mypackage/tests which is only expanded about 10 lines down.

[lshala]

Done.

[lshala]

Not sure if we should use two overloaded functions, e.g. “exclusionPatterns” or separate as here

[oxisto]

You can overload them.

[lshala]

Done. As far as I unterstand, the JvmName annotation is required because the two functions only differ by a generic parameter and the JVM erases that parameter during compilation

[oxisto]

Can we have varargs instead of a list? Then they should be different and varargs might be nice to work with