Added:
nearby::api::ble_v2::BlePeripheral::GetUniqueId()
nearby::api::ble_v2::BleMedium::GetRemotePeripheral(...)
Moved BlePeripheral implementation from bluetooth_adapter_* to ble_v2.*
Added G3 (test) implementation for the new methods.
PiperOrigin-RevId: 531023568