physical prescence on screen for each cursor in the room

[thomascgray]

by which i mean: every persons cursor is show floating around on everyone elses screen

for example, excalidraw does something like this:

it needs to be performant though: maybe something where it reads every persons cursor position every half a second and pings that out, and the receivers animate the movement, like the way moving objects works at the minute?

theres this article: https://www.canva.dev/blog/engineering/realtime-mouse-pointers/

which makes it seem insanely complicated tbh? and i dont think it needs to be? but worth considering

[thomascgray]

Also worth noting: if there's a library that can help with this, it's worth it. But we don't need to, might be really simple?

[thomascgray]

one more thing too - while were here, we should probably do some work around making it so the users can see what each other has selected/highlighted. while we're doing this ticket, investigate if this aspect is simple/hard and make a choice as to whether we do it in this same feature, or if this is worth a separate feature