KVMD 3.27: Mouse polling rate

The new version ships with a new feature: configurable mouse polling rate.

Previously it was a fixed 100ms, now it can be reduced to 10ms, so on good communication channels it makes the mouse more responsive.

Other changes:

• Added tests to check whether the browser supports WebRTC/H.264.
• Added a GPIO driver for a new KVM switch XK-HK4401.

To update:

rw
pacman -Syu
reboot

We also fixed the use of new Tailscale versions. Install the tailscale-pikvm package.