feat(): add NewPeek / RequestBlock / RespondBlock

[n33pm]

Add FullNode Message Types:

• NewPeak
• RequestBlock
• RespondBlock

Types:

• add streamable

Streamable:

• unmarshal / marshal Array
• unmarshal / marshal Struct
• unmarshal / marshal Bool

[cmmarslender]

Thanks for the PR! I'll take a more in depth look soon. I know tests are lacking across a lot of the project, but if you are able, it would be great to have tests for more of the Streamable implementations in here, to make sure someone reordering structs, etc in the future doesn't break the serialized format (since the order is critical when dealing with streamable types). Seems like there are tests and I missed at first, doing the review now

[cmmarslender]

Thanks for putting all the effort here in getting this added. This was probably one of the bigger initial undertakings for better streamable support.

I have a bunch of requested changes - A majority of them are just suggestions that should apply easily in GitHub to update doc references, since most of these originates in chia-rs these days.

Aside from those, just a few other minor changes requested