Add more extensions to follow edges until the end

[KuechA]

More homogeneous interfaces of the followX... extensions, and more functions which follow the edges until the end (without condition)

[codecov]

Codecov Report

Attention: Patch coverage is 20.58824% with 54 lines in your changes missing coverage. Please review.

Project coverage is 75.95%. Comparing base (90a1534) to head (86b9431).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...kotlin/de/fraunhofer/aisec/cpg/graph/Extensions.kt	18.18%	54 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...main/kotlin/de/fraunhofer/aisec/cpg/query/Query.kt	61.25% <100.00%> (ø)
...kotlin/de/fraunhofer/aisec/cpg/graph/Extensions.kt	53.13% <18.18%> (-9.42%)	⬇️

... and 1 file with indirect coverage changes

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[maximiliankaul]

Code looks good to be. However, it'd be nice to have some tests... But we already talked about this and that it'd be a lot of work to come up with all the fluent dsl code -> I get why there aren't any tests right now...