Support dry-running generators #609

Job	Run time
coverage	3m 8s
setup / config	1s
matrix_prep / matrix_prep	3s
test (macos-12, darwin, amd64, publicRepo)	3m 10s
test (macos-12, darwin, arm64, publicRepo)	2m 45s
test (ubuntu-22.04, linux, amd64, always)	2m 30s
test (ubuntu-22.04, linux, arm64, always)	2m 25s
test (windows-2019, windows, amd64, always)	5m 53s
test (windows-2019, windows, arm64, always)	4m 32s
build (macos-12, darwin, amd64, publicRepo)	3m 3s
build (macos-12, darwin, arm64, publicRepo)	5m 9s
build (ubuntu-22.04, linux, amd64, always)	2m 34s
build (ubuntu-22.04, linux, arm64, always)	2m 27s
build (windows-2019, windows, amd64, always)	6m 28s
build (windows-2019, windows, arm64, always)	4m 30s
Publish Tests Results	2s
release	0s
	48m 40s

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