feat: implement and consume merkleizeBlockArray

[twoeths]

Motivation

• When we have a list of bytes or list of composite, if new value is over the cached chunk/block bytes, right now we reallocate the whole Uint8Array which is not good due to gc

Description

• Instead of that, implement merkleizeBlockArray(blocks: Uint8Array[], ...). In the above case we only need to allocate some more Uint8Array instances, each 64 bytes

• refactor merkleizeInto() to merkleizeBlocksBytes() to avoid naming conflict

• model block bytes which is 64 bytes instead of chunk bytes which is 32 bytes

• this branch run on feat 16, 1, novc for 5 days without issue

• persisting gc statistic on 1d interval of md16:

• vs stable md16