Dynamically resize input buffer

[raiguard]

By default, Wayland has a fixed input buffer size, meaning that if a client freezes for too long, it will get disconnected. This happens on all Wayland compositors and is particularly frustrating when debugging, and players of the game I work on have also ran into the issue due to the game's single-threaded nature.

Fortunately, the Wayland library now supports resizing this input buffer: https://gitlab.freedesktop.org/wayland/wayland/-/merge_requests/188.

Could niri please implement this so that I can keep my sanity when debugging under Wayland?

Video demonstration of how easy it is to encounter this while debugging:

2024-10-24T17.23.55.290954444-06.00.mp4

[YaLTeR]

Right, yeah. The question is whether this is something that Smithay needs to do, or on niri side. I'll ask in the Smithay Matrix room.