add CODEOWNERS file #580

Job	Run time
gather	3s
gather	3s
setup_matrix	1s
setup_matrix	1s
format	1m 1s
format	1m 1s
integration-tests (ubuntu-latest, 6.0.x)	11m 53s
integration-tests (ubuntu-latest, 6.0.x)	11m 53s
integration-tests (ubuntu-latest, 8.0.x)	12m 8s
integration-tests (ubuntu-latest, 8.0.x)	12m 8s
integration-tests (windows-latest, 6.0.x)	16m 50s
integration-tests (windows-latest, 6.0.x)	16m 50s
integration-tests (windows-latest, 8.0.x)	18m 11s
integration-tests (windows-latest, 8.0.x)	18m 11s
integration-tests (macos-11, 6.0.x)	25m 49s
integration-tests (macos-11, 6.0.x)	25m 49s
integration-tests (macos-11, 8.0.x)	10m 24s
integration-tests (macos-11, 8.0.x)	28m 10s
build (ubuntu-latest, 6.0.x)	6m 9s
build (ubuntu-latest, 6.0.x)	6m 9s
build (ubuntu-latest, 8.0.x)	6m 14s
build (ubuntu-latest, 8.0.x)	6m 14s
check-pr	1s
check-pr	1s
release-dev-sdk	0s
release-dev-sdk	0s
	3h 55m 14s

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