Add edit-none icon
Summary:
Adds an edit-none icon, needed by D18675.
Test Plan: Open Cuttlefish and search for the icon.
Reviewers: VDG, ngraham
Reviewed By: VDG, ngraham
Subscribers: kde-frameworks-devel, VDG
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D18694