Add LICENSE and OWNERS files am: 18b1b2ee6c am: faa4fa5566 am: 386592a55f

Original change: https://android-review.googlesource.com/c/platform/external/sg3_utils/+/2315503

Change-Id: I9a6d0aa7de1c79cf5f213344ed7b9799fbe60200
Signed-off-by: Automerger Merge Worker <[email protected]>