Fix shortcut icon in launcher

When building icon for shortcut, check if the icon is LayerDrawable.
- If yes, only take the second layer (foreground).

Also move the class to shortcut package

Change-Id: I3513dbeb6509f11aa70ab3230d441e268ca9356d
Fixes: 72553870
Test: atest

src/com/android/settings/localepicker/LocaleDragAndDropAdapter.java

@@ -34,7 +34,7 @@ import android.widget.CompoundButton;
 import com.android.internal.app.LocalePicker;
 import com.android.internal.app.LocaleStore;
 
-import com.android.settings.CreateShortcut;
+import com.android.settings.shortcut.CreateShortcut;
 import com.android.settings.R;
 
 import java.text.NumberFormat;