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)
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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)