Basic support for overlay PR analysis #4416

Job	Run time
Diagnostic export (macos-latest, linked)	1m 2s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 7s
Diagnostic export (windows-latest, linked)	2m 59s
Diagnostic export (macos-latest, nightly-latest)	1m 21s
Diagnostic export (windows-latest, nightly-latest)	2m 58s
Diagnostic export (ubuntu-latest, linked)	1m 4s
	10m 31s

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