Basic support for overlay PR analysis #3994

Job	Run time
Resolve environment (windows-latest, default)	2m 38s
Resolve environment (macos-latest, default)	1m 53s
Resolve environment (ubuntu-latest, default)	33s
Resolve environment (macos-latest, linked)	1m 51s
Resolve environment (ubuntu-latest, nightly-latest)	35s
Resolve environment (windows-latest, linked)	2m 18s
Resolve environment (windows-latest, nightly-latest)	2m 51s
Resolve environment (ubuntu-latest, linked)	38s
Resolve environment (macos-latest, nightly-latest)	1m 57s
	15m 14s

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