Enable rust backend for android.hardware.bluetooth(.audio) am: 00035204dc am: 455c4e397c

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3427923

Change-Id: I718f2b9b8bb849e089fed2939f6243f1684fa423
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>