Clean up home buttons
Move home actions to a new home button (QAction) on click it will send home all when its menu is exposed the user can select the axis individually. This places the most common action in the toolbar and the less common action in the menu.
Test Plan: Get input from VDG on the change.
Reviewers: laysrodrigues, tcanabrava, patrickelectric, VDG, ngraham
Reviewed By: VDG, ngraham
Differential Revision: https://phabricator.kde.org/D12010