Basic support for overlay PR analysis #4332

Job	Run time
Diagnostic export (macos-latest, linked)	59s
Diagnostic export (windows-latest, linked)	2m 30s
Diagnostic export (windows-latest, nightly-latest)	2m 26s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 3s
Diagnostic export (ubuntu-latest, linked)	1m 1s
Diagnostic export (macos-latest, nightly-latest)	1m 17s
	9m 16s

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