Merge "Check in BUILD files in prebuilts/rust and...

Merge "Check in BUILD files in prebuilts/rust and external/bazelbuild-rules_rust" into main am: 95e8fe9e am: fa91c0be am: b4694b2c

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2705474



Change-Id: I9ef0a382c1dca391edf0f8b3011343be1fe32098
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>