build: use genrule for best practices copy #4022

Job	Run time
list	30s
workflow (build-unit-tests)	2m 22s
workflow (devkit-core-tests-rerun)	1m 47s
workflow (modules-builder-tests)	1m 59s
workflow (build-cli)	1m 45s
workflow (devkit-core-tests)	1m 35s
	9m 58s

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