Head-tracking based resolution interaction

[thewtex]

Zoom in and out in resolution / region of interest (depends on #397), with eye / head tracking. Perhaps use the y position of the viewer's nose?

Perhaps using:

• https://handsfree.js.org/
• https://mediapipe.dev/
• https://betterprogramming.pub/face-tracking-with-javascript-on-any-device-with-a-browser-mobile-or-desktop-48aa561fd9d5?gi=6adf7a76f48e
• https://justadudewhohacks.github.io/face-api.js/docs/index.html

Likely a button to opt-in to this behavior.

Suggested-by: @satra