[Feature] Bincode support for alloy-consensus and alloy-primitive types

[shekhirin]

Component

consensus, eips, genesis, serde

Describe the feature you would like

Problem

Bincode does not support #[serde(skip*)] attributes. Additionally, there's a similar issue with rmp-serde.

It means that we cannot use a lot of Alloy types for serialization/deserialization using these formats.

Solution

Introduce helper serde modules for those structs in alloy-consensus that have #[serde(skip*)] attributes on fields and remove those attributes. Modules should be similar to

alloy/crates/rpc-types-beacon/src/payload.rs

Lines 275 to 298 in 5c7470c

	/// A helper serde module to convert from/to the Beacon API which uses quoted decimals rather than
	/// big-endian hex.
	pub mod beacon_payload_v1 {
	use super::*;
	/// Serialize the payload attributes for the beacon API.
	pub fn serialize<S>(
	payload_attributes: &ExecutionPayloadV1,
	serializer: S,
	) -> Result<S::Ok, S::Error>
	where
	S: Serializer,
	{
	BeaconExecutionPayloadV1::from(payload_attributes).serialize(serializer)
	}
	/// Deserialize the payload attributes for the beacon API.
	pub fn deserialize<'de, D>(deserializer: D) -> Result<ExecutionPayloadV1, D::Error>
	where
	D: Deserializer<'de>,
	{
	BeaconExecutionPayloadV1::deserialize(deserializer).map(Into::into)
	}
	}

Then, these modules should be used in structs that have problematic types as fields. For example, for the Block type we will need to use a #[serde_as] on the Block struct and #[serde_as(as = "HeaderBincode")] on the header field

alloy/crates/consensus/src/block.rs

Lines 15 to 18 in cf9a98f

	#[derive(Debug, Clone, PartialEq, Eq, Default)]
	pub struct Block<T> {
	/// Block header.
	pub header: Header,

Both of the attributes should be gated by the serde-bincode feature.

The types that need special handling are:

• Header
• TxEip2930
• TxEip1559
• TxLegacy

As a test, we should be able to serialize and deserialize the Block struct using bincode.

Additional context

No response