Add Mac Os Bundle Info and set window icon
Summary:
Add Bundle and Bundle icon on mac os
Set icon for the test clients window
Test Plan: Tested on mac os bundle has the correct icon and the dock shows the proper icon also
Reviewers: laysrodrigues, patrickelectric, tcanabrava
Reviewed By: laysrodrigues
Subscribers: Atelier: AtCore
Differential Revision: https://phabricator.kde.org/D8629