Draft: server: make wl_event_loop optional
Allow compositors to bring their own event loop to completely replace libwayland's.
Toy compositor: https://gitlab.freedesktop.org/emersion/wl-custom-event-loop
Allow compositors to bring their own event loop to completely replace libwayland's.
Toy compositor: https://gitlab.freedesktop.org/emersion/wl-custom-event-loop