Summary:
Currently not visible in the plasma UI, but appstream complains about a
lack of a summary, which I assume means it could be visible in
discover/other package manager.

Test Plan: N/A

Reviewers: #plasma, broulik

Reviewed By: #plasma, broulik

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D9477