Merge "libsnapshot: Add single threaded compression to v3 writer" into main am: 5e83e63b

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2816298



Change-Id: Iad66f1f38f911f93cf361512b6f44b2a9e10f3cd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>