Allow triggering sort from QML
Summary:
I was missing a way to trigger the sorting of my contacts list from QML
See https://invent.kde.org/kde/plasma-phonebook/merge_requests/17/ for context
Reviewers: apol
Reviewed By: apol
Subscribers: mpyne, jbbgameich, broulik, kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D24046