Basic support for overlay PR analysis #4458

Job	Run time
Config export (ubuntu-latest, linked)	1m 6s
Config export (windows-latest, linked)	3m 24s
Config export (macos-latest, linked)	1m 4s
Config export (macos-latest, nightly-latest)	1m 24s
Config export (ubuntu-latest, nightly-latest)	1m 7s
Config export (windows-latest, nightly-latest)	3m 18s
	11m 23s

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