EIP-7688: Forward Compatible Consensus Data Structures

[macladson]

Relevant Links

• https://eips.ethereum.org/EIPS/eip-7688
• Forward compatible consensus data structures (EIP-7688) ethereum/consensus-specs#4630

Proposed Changes

Adds the necessary types and components to support EIP-7688, along with the cargo patches to pull in the progressive versions of the crates in our SSZ stack.

Testing

Based on my testing this branch can interop with the eip-7688 branches from both Nimbus and Lodestar with the following kurtosis config which includes a Lighthouse image built from this branch:

participants_matrix:
  el:
    - el_type: nethermind
      el_image: ethpandaops/nethermind:master
  cl:
    - cl_type: nimbus
      cl_image: ethpandaops/nimbus-eth2:eip-7688-minimal
    - cl_type: lodestar
      cl_image: chainsafe/lodestar:eip-7688
    - cl_type: lighthouse
      cl_image: macladson/lighthouse:eip-7688
      cl_extra_params:
        - --enable-mplex

global_log_level: debug

network_params:
  preset: minimal
  gloas_fork_epoch: 1

additional_services:
  - dora

Additional Info

Based on the original work by @michaelsproul in #8505