Support ignoring generated files #6687

Job	Run time
Ruby analysis (macos-latest, linked)	1m 17s
Ruby analysis (ubuntu-latest, nightly-latest)	47s
Ruby analysis (macos-latest, default)	1m 18s
Ruby analysis (ubuntu-latest, linked)	49s
Ruby analysis (macos-latest, nightly-latest)	52s
Ruby analysis (ubuntu-latest, default)	46s
	5m 49s

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