Merge "Add copyright to libsnapshot/tools" into main am: 26bed5fc09 am: 1b53b83925 am: 8463e11b63

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

Change-Id: Ib35a53a0b8ede57e9690eb57b56d8b91df71fa83
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>