Implement the presentation time protocol
Tested with Chromium (finally does 120hz), weston-presentation-shm and gamescope. Should also fix all the electron apps being limited to 60Hz when run in Wayland native mode
Tested with Chromium (finally does 120hz), weston-presentation-shm and gamescope. Should also fix all the electron apps being limited to 60Hz when run in Wayland native mode