NRMC-1437: Client-side prediction

[NormalMark]

No description provided.

[maxweisel]

This document is kind of half of client side prediction and half a description of our datastore caching layer, which I feel like is somewhat unique and doesn't fall under the "client side prediction" title. To me client-side prediction has more to do with smoothly interpolating / extrapolating values over time (I'm thinking RealtimeTransform or a deterministic rollback physics system) than it does an optimistic change cache.

There is a lot of useful information here, but I don't think a document called "Client side prediction" is the best home for it. Let's talk through this in the Normcore Unity sync. I want to make sure I understand who this document is for and what kind of questions we're trying to answer. I think there are better spots in our existing documentation pages to put this information.