Add a util method of creating Icon with Drawable

- Add a util method to help create Icon with Drawable so that
users don't need to handle bitmaps
- Add support for creating with ColorDrawable

Test: robotest
Fixes: 124407373
Change-Id: I1897256821cc804a5e599d967feb84a3bcd689a9

src/com/android/settings/homepage/contextualcards/slices/BluetoothDevicesSlice.java

@@ -220,7 +220,7 @@ public class BluetoothDevicesSlice implements CustomSliceable {
                 .getBtClassDrawableWithDescription(mContext, device);
 
         if (pair.first != null) {
-            return IconCompat.createWithBitmap(Utils.drawableToBitmap(pair.first));
+            return Utils.createIconWithDrawable(pair.first);
         } else {
             return IconCompat.createWithResource(mContext,
                 com.android.internal.R.drawable.ic_settings_bluetooth);