Add best-effort CDS extractor support for `@sap/cds-indexer` #34

Job	Run time
Create CodeQL Unit Test Matrix	8s
Run Unit Tests (2.24.1, codeql-cli/v2.24.1, codeql-bundle-v2.24.1, ubuntu-latest, codeql-cli_v2.2...	27m 18s
Validate test results	9s
	27m 35s

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