[New Primitive] `LiveCursor`

[jjenzz]

I'm not sure what the primitive would be called but LiveCursor paints a more accurate picture in my mind of the idea that originated here https://github.com/radix-ui/primitives/discussions/1090.

Obviously this pattern is likely difficult to make readable by SRs and may even be an a11y failure so perhaps it can follow a similar approach to HoverCard in that it would be for sighted users only.

Examples in the wild:

• Figma multiplayer mode
• Liveblocks live cursor
• Vercel conference marketing website multiplayer (can't find a link for this now but here is a video showing the gist)

[lewisvrobinson]

Chris from Liveblocks recently posted a great article on animating live cursors and dealing with latency.

https://liveblocks.io/blog/how-to-animate-multiplayer-cursors

Could come in handy!

[franklinjavier]

https://github.com/radix-ui/primitives/discussions/1090#discussioncomment-6620771