Merge "Revert "Define a tool and a static rule to calculate the hash of a...

Merge "Revert "Define a tool and a static rule to calculate the hash of a directory"" into main am: 7e047248 am: b4f86ad1

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3428222



Change-Id: Ic929d96ac2c15ea67a7a77ab5a03d74768d99251
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>