foreign-toplevel-management: add support for fullscreening toplevels
This can be used for fullscreening an app from a taskbar, and potentially also for panels to autohide themselves in case a fullscreen toplevel appears. Related to #45 (closed)
This can be used for fullscreening an app from a taskbar, and potentially also for panels to autohide themselves in case a fullscreen toplevel appears. Related to #45 (closed)