Basic support for overlay PR analysis #5040

Job	Run time
Ruby analysis (ubuntu-latest, default)	50s
Ruby analysis (macos-latest, linked)	1m 0s
Ruby analysis (ubuntu-latest, nightly-latest)	49s
Ruby analysis (macos-latest, default)	52s
Ruby analysis (ubuntu-latest, linked)	45s
Ruby analysis (macos-latest, nightly-latest)	53s
	5m 9s

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