Add layout for advanced BT detail header

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

src/com/android/settings/bluetooth/BluetoothDetailsHeaderController.java

@@ -62,7 +62,8 @@ public class BluetoothDetailsHeaderController extends BluetoothDetailsController
     protected void setHeaderProperties() {
         final Pair<Drawable, String> pair = BluetoothUtils
                 .getBtClassDrawableWithDescription(mContext, mCachedDevice,
-                mContext.getResources().getFraction(R.fraction.bt_battery_scale_fraction, 1, 1));
+                        mContext.getResources().getFraction(R.fraction.bt_battery_scale_fraction, 1,
+                                1));
         String summaryText = mCachedDevice.getConnectionSummary();
         // If both the hearing aids are connected, two device status should be shown.
         // If Second Summary is unavailable, to set it to null.
@@ -84,4 +85,4 @@ public class BluetoothDetailsHeaderController extends BluetoothDetailsController
     public String getPreferenceKey() {
         return KEY_DEVICE_HEADER;
     }
-}
+}