[kstyle] Tools area
Summary: There is now a tools area.
Test Plan:
Reviewers: Plasma, Breeze, VDG, hpereiradacosta, davidre, ngraham
Reviewed By: Breeze, VDG, hpereiradacosta, ngraham
Subscribers: mart, maartens, abstractdevelop, IlyaBizyaev, davidre, davidedmundson, hpereiradacosta, ngraham, manueljlin, niccolove, ndavis, plasma-devel
Tags: Plasma
Maniphest Tasks: T10201, T11661
Differential Revision: https://phabricator.kde.org/D27669