Replace tuple with `BlockNumHash`

[emhane]

Describe the feature

Make this a wrapper of alloy_eips::BlockNumHash instead

op-reth/crates/optimism/trie/src/db/models/block.rs

Lines 10 to 14 in 0cf732f

	/// Wrapper for block number and block hash tuple to implement [`Compress`]/[`Decompress`].
	///
	/// Used for storing block metadata (number + hash).
	#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, From, Into, Constructor)]
	pub struct BlockNumberHash(pub u64, pub B256);

Additional context

alloy-eips is already a dependency of reth-optimism-trie indirectly via reth-trie which depends on alloy-consensus, alloy-consensus depends on alloy-eips, so we might as well use the nice existing type from alloy-eips