Add support for "network NBT"

[occanowey]

This adds support for post 1.20.2 networked NBT which doesn't encode compound tag names.
Pretty basic changes just adds a new deserialize option and a single if statement.

closes #103

[owengage]

Excellent, thank you. You've managed to name everything as I would!

I'll merge this but will likely add some unit testing prior to releasing, unless you fancy adding those.

One important characteristic is only the root compound has its name skipped, I believe?

[occanowey]

Unless there's some specific packet doing something quirky then that's what it says on the wiki and I had a look at a vanilla servers registry data and it was only the root missing a name.

I'll add a test or two and open another pr.