Support ignoring generated files #8455

Job	Run time
Split workflow (ubuntu-latest, default)	1m 14s
Split workflow (macos-latest, default)	1m 27s
Split workflow (macos-latest, linked)	1m 25s
Split workflow (ubuntu-latest, linked)	1m 24s
Split workflow (ubuntu-latest, nightly-latest)	1m 18s
Split workflow (macos-latest, nightly-latest)	2m 0s
	8m 48s

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