Add NativeCmdStepTest to test serialization #1416

Job	Run time
spotlessCheck assemble testClasses	1m 55s
build (maven, 11, ubuntu-latest)	6m 29s
build (maven, 17, ubuntu-latest)	7m 6s
build (maven, 21, ubuntu-latest)	7m 34s
build (gradle, 11, ubuntu-latest)	8m 28s
build (gradle, 17, ubuntu-latest)	9m 22s
build (gradle, 21, ubuntu-latest)	8m 55s
build (maven, 11, windows-latest)	9m 38s
build (gradle, 17, windows-latest)	14m 1s
build (npm, 11, ubuntu-latest)	6m 32s
build (shfmt, 11, ubuntu-latest, v3.8.0)	2m 0s
	1h 22m 0s

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