First things first, we need to be able to serialize and deserialize objects to the Cap'n Proto format. My goal for this is to develop a "low level" implementation of this that is as efficient as we can get in C#. I don't mind using unsafe in need be.

We'll use this to build an easier to use serialization and deserialization later later.

Ideally, I'd like this layer to be compatible with AOT compilation as well.