Improve wrapper performance

[nplasterer]

Discovered in this PR #457

We have some suboptimal performance in React Native versus Native

Action	Android	RN Android
Alix loaded 1000 groups	24ms	2464ms
Alix synced 1000 groups	6ms	18ms
Bo synced 1000 groups	2682ms	2426ms
Bo loaded 1000 groups	13ms	2443ms

This is going to become more and more necessary to fix once we have 1to1 backed by our MLS local db.

What I discovered on digging in is that the wrapper function for groups takes ~3ms to complete so for 1000 groups it would take 3000ms. I tried a few things to speed it up but even just 2x performance isn't going to get us where we want to be. I think we need a big fix

My suggestion is that we create protos for each of the wrapped functions. Then we pass those protos directly from the libxmtp database keeping them in proto form the entire way out to RN. This should improve performance a lot. My only concern is that we also encode the member list and other functions so the proto would have to be pretty complex.