[Feature] Introduce Block type in alloy-consensus

[mattsse]

Component

consensus, eips, genesis

Describe the feature you would like

currently we don't have a block type in the consensus crate

ref

https://github.com/paradigmxyz/reth/blob/97cc9dd8ecaaf7ebfa0b401ed080da28dc791376/crates/primitives/src/block.rs#L28-L48

this type should be structured slightly differently, so that there's a body container struct that wraps transactions, requests, withdrawals

which is this type

https://github.com/paradigmxyz/reth/blob/97cc9dd8ecaaf7ebfa0b401ed080da28dc791376/crates/primitives/src/block.rs#L557-L566

Additional context

No response

[yash-atreya]

Closed by #1319