Add request parameter to autocomplete_custom_queryset_filter function

[prusayn]

This PR adds request to autocomplete_custom_queryset_filter function. This allows for more advanced filtering of search results (for ex. by user or his permissions).

My case scenario:

@staticmethod
    def autocomplete_custom_queryset_filter(request, search_term: str) -> QuerySet:
        return Client.objects.filter(created_by=request.user)