Introduce new that represents the variants of all versioned payload types

[mattsse]

Describe the feature

currently both op and eth have the same payload types,

https://github.com/paradigmxyz/reth/blob/5e386130da0b123e107f5eb5a9a3a3622bc50129/crates/engine/primitives/src/lib.rs#L34-L35

hence we're able to do use:

https://github.com/paradigmxyz/reth/blob/5e386130da0b123e107f5eb5a9a3a3622bc50129/crates/payload/primitives/src/payload.rs#L8-L11

with https://github.com/alloy-rs/alloy/pull/1480 this will no longer be the case and we need helpers to make this work

TODO

• introduce an enum that is generic over EngineTypes and has 4 variants

enum ExecutionPayload<T: EngineTypes> {
 V1(T::ExecutionPayloadV1),
 ...
}
// and a ref type that takes &'a as variant values
enum ExecutionPayloadRef

• replace https://github.com/paradigmxyz/reth/blob/5e386130da0b123e107f5eb5a9a3a3622bc50129/crates/payload/primitives/src/payload.rs#L5-L11 with T: EngineTypes and use that type instead

ref https://github.com/alloy-rs/alloy/pull/1480 cc @cody-wang-cb

Additional context

No response

[PanGan21]

Nice, it seems though that if EngineTypes is imported in reth-payload-primitives there will be a cyclic dependency issue. What would be a good way to work around this issue?

[YashBit]

@mattsse Please can you assign this to me.

[mattsse]

actually I got it wrong and have to close this because I mixed up envelope types with payload types