Enable rust backend

Enable rust EVS HAL backend and add its empty implementation that
returns binder::StatusCode::UNKNOWN_ERROR for all API except deprecated
ultrasonic API.

Fix: 319475162
Test: Build android.hardware.automotive.evs-aidl-rust-service and
      manually run it on cf_x86_64_auto lunch target.
Flag: EXEMPT HAL interface change
Change-Id: Ib9a1ee5fb224c114f57b6b6dca21d7b1cee005f0