fifo-v1: Add new protocol

In order to implement advanced presentation modes, such as FIFO under Vulkan, the compositor needs to maintain a queue of state. This is an attempt to expose such a queue to clients.

To be useful, timestamp information must also be present (such as that provided by a protocol like !248 (merged))

Requirements for merging

• Review
  • Mesa (@daniels)
• Implementations
  • Mutter: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3355
  • wlroots: wlroots/wlroots!4463
  • Mesa: mesa/mesa!26150 (merged)
  • Jay: https://github.com/mahkoh/jay/pull/141
• ACKs from members (3+)
  • wlroots (@emersion)
  • Mesa (@zmike)
  • GTK/Mutter (@jadahl)