Add new preferences search icons
Summary:
Add a new icon for usage with the system-settings "search" category,
which currently uses the baloo icon
Reviewers: VDG, ngraham, trickyricky26, bruns
Reviewed By: VDG, ngraham, trickyricky26, bruns
Subscribers: ndavis, trickyricky26, bruns, kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D24959