Merge "Add copyright to libsnapshot/tools" into main am: 26bed5fc09

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2763850

Change-Id: I868a1db6b5920a827aa60c375992a3f21895290a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>