Can we update the dropdownlist control to allow for a filter region template. This will allow, so that a custom component can be placed where the filter box is.

The use case that we have is to have our common input component, which has all the application styles pre-applied, be used for filtering. We can currently do this for grid component's filtering. But unlike grid filters, kendo dropdownlist does not allow for a template for the search region. This would be a good feature and consistent with other controls in the kendo library.