Rust Skeleton BroadcastRadio HAL implementation.

WARNING: This is not a reference BroadcastRadio HAL implementation and does not contain any actual implementation.

This folder contains a skeleton broadcast radio HAL implementation in Rust to demonstrate how vendor may implement a Rust broadcast radio HAL. To run this broadcast radio HAL, include android.hardware.broadcastradio-rust-service in your image.

This implementation returns StatusCode::UNKNOWN_ERROR for all operations and does not pass VTS/CTS. Vendor must replace the logic in default_broadcastradio_hal.rs with the actual implementation