As for unthethered headset, get BT data from BT metadata, rather than
CachedBluetoothDevice
Bug: 122460277
Test: RunSettingsRoboTests
Change-Id: Ifb5507cbbce9602726ba272c12d1bf95eff91001
If device supports metadata, then we display advanced UI in Bluetooth
details header. This CL adds layout for this header.
In advanced layout, it will show:
1. Device name
2. Left, right and case icon
3. Left, right and case battery level
Once API is ready, following CL will get metadata from it and set it
to UI.
Bug: 122460277
Test: RunSettingsRoboTests
Change-Id: Ide044cf9705f350b431b2cb3a9ad82cc4425a17e
