Providing an API to update the imported symbols for an ImportDeclaration

[oxisto]

This introduces a new extension function ImportDeclaration.updateImportedSymbols. The idea behind that is that we might need to update the importedSymbols of an import declaration, if the symbols that "live" in the associated namespace change. This is mainly the case once we infer records out of known Type nodes. Therefore, the type resolver will update all the imported symbols before executing all the remaining passes. This way, the remainder of the passes can access imported symbols that were inferred.

Needed for #1862

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 77.04%. Comparing base (e39f15d) to head (f6bc1e3).

Files with missing lines	Patch %	Lines
...n/de/fraunhofer/aisec/cpg/passes/ImportResolver.kt	85.71%	0 Missing and 2 partials ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...lin/de/fraunhofer/aisec/cpg/passes/TypeResolver.kt	95.83% <100.00%> (+0.18%)	⬆️
...n/de/fraunhofer/aisec/cpg/passes/ImportResolver.kt	89.65% <85.71%> (-0.46%)	⬇️

... and 2 files with indirect coverage changes

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