Move to own NBT crate

[Snowiiii]

What Advantages this has:

• If a new game update releases and breaks/changes NBT System, We don't depend on other crates to update
• We may can fix this

  Pumpkin/pumpkin-core/src/text/mod.rs

  Line 142 in cb60b02

  pub fn encode(&self) -> Vec<u8> {

• The NBT format does not support booleans, You have to write 1 or 0 u8 for a boolean. fastnbt just crashes when using booleans without any info. This took me 2 Days to debug when i first created the registry. I definitely want to support booleans, This will make Coding easier
• We may can make our NBT crate faster than fastnbt

(Not fully serious)

• Learn new things
• Have Fun

[StripedMonkey]

I advocate keeping this a module in pumpkin-protocol. In principle this is just a data format we should be (de)serializing to and from. We don't want to tie any structs to a nbt-specific data type if at all possible.