implementing a helper function to work with dataFlow results

[maximiliankaul]

@KuechA can you support here? The internal variables need some re-naming (what's going on here)? And all the casting and map doesn't feel right... But it seems to work...

[KuechA]

Thinking about it, maybe we can re-use some stuff which we have for the sarif-printing.

[codecov]

Codecov Report

Attention: Patch coverage is 59.57447% with 19 lines in your changes missing coverage. Please review.

Project coverage is 78.44%. Comparing base (a771536) to head (ff1ed0a).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...kotlin/de/fraunhofer/aisec/cpg/graph/Extensions.kt	55.00%	8 Missing and 1 partial ⚠️
.../kotlin/de/fraunhofer/aisec/cpg/query/QueryTree.kt	57.14%	6 Missing ⚠️
...otlin/de/fraunhofer/aisec/cpg/query/FlowQueries.kt	69.23%	3 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (59.57%) is below the target coverage (75.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

Files with missing lines	Coverage Δ
...rc/main/kotlin/de/fraunhofer/aisec/codyze/Sarif.kt	73.07% <ø> (ø)
...otlin/de/fraunhofer/aisec/cpg/query/FlowQueries.kt	93.49% <69.23%> (-2.22%)	⬇️
.../kotlin/de/fraunhofer/aisec/cpg/query/QueryTree.kt	59.43% <57.14%> (-0.35%)	⬇️
...kotlin/de/fraunhofer/aisec/cpg/graph/Extensions.kt	55.65% <55.00%> (-0.32%)	⬇️

... and 2 files with indirect coverage changes

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[maximiliankaul]

Remove the successfulLastNodes function and the companion object in #2100 once this is ready.