Android: extract styles for ToolBar & ToolButton

Task-number: QTBUG-39215
Change-Id: I1d424436e50f96385b5581444b260c3e27e7291e
Reviewed-by: BogDan Vatra <bogdan@kde.org>
Android: extract switchStyle

Task-number: QTBUG-39215
Change-Id: I53c435b80ea2603eb942eac3307654dd0fc0ae12
Reviewed-by: BogDan Vatra <bogdan@kde.org>