EIP-7251: EL Triggered Consolidations

[Rjected]

Describe the feature

This is now in the devnet-1 spec, and adds a new system call that the EL has to implement, so it should be implemented in reth.

This involves a few things:

• Addition of a new consolidations EIP-7685 request type: [Feature] EIP-7251 Consolidations Request type alloy-rs/alloy#884
• Addition of new consolidations constants (added in feat: add eip-7251 system contract address/code alloy-rs/alloy#956)
• Consolidation request fee calculations
• Consolidation system contract
  • The contract call itself
  • Request list validation
    • From the EIP:

      Check that consolidation requests in the EIP-7685 requests list matches the list returned from dequeue_consolidation_requests() function of the smart contract respecting the order of the returned requests. If this condition does not hold, the block MUST be deemed invalid.

• Updates to engine API: engine: Add EL triggered consolidations ethereum/execution-apis#554

Additional context

EIP link: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-7251.md