[Feature] Implement a parallel chunked serialization utility

[ljedrz]

Inspired by https://github.com/ProvableHQ/snarkVM/pull/3030, where the serialization of the block tree takes over 2s with the mainnet ledger. This can be made faster, and could be useful for other applications.

[ljedrz]

I have a prototype which took the mainnet ledger serialization time down from 2.48s to ~0.7s. I'll see if I can improve it a bit more.

[vicsn]

I have a prototype which took the mainnet ledger serialization time down from 2.48s to ~0.7s. I'll see if I can improve it a bit more.

I think 2.48 seconds is already sufficient - and we'd rather use your powers for other work now. :) Feel free to DM. Let's keep up the pace and progress 🚀