[Feature] Allow querying blocks by hash

[austinabell]

Feature

Blocks can currently be queried by height or tag, where it would be nice to also have hash

risc0-ethereum/steel/src/host/mod.rs

Lines 50 to 65 in 917180d

	pub enum BlockNumberOrTag {
	/// The most recent block in the canonical chain observed by the client.
	#[default]
	Latest,
	/// The parent of the most recent block in the canonical chain observed by the client.
	/// This is equivalent to `Latest - 1`.
	Parent,
	/// The most recent block considered "safe" by the client. This typically refers to a block
	/// that is sufficiently deep in the chain to be considered irreversible.
	Safe,
	/// The most recent finalized block in the chain. Finalized blocks are guaranteed to be
	/// part of the canonical chain.
	Finalized,
	/// A specific block number in the canonical chain.
	Number(u64),
	}

Motivation

Some users have a block hash, and doing the lookup/sanity check is a bit unideal

Implementation

[linear]

WEB3-282 [Feature] Allow querying blocks by hash