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 am: e4d28fe6 am: 99a70e3c

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



Change-Id: I3daef76f09d72015ae8b5dbebe0b4b4b11de139a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>