Tracking: EIP-4788

[onbjerg]

Describe the feature

Tracking issue for EIP-4788.

## Primitives
- [ ] Add `hash_tree_root` to `Header` (32 bytes)
- [ ] Add `current_slot` to `Header` (big endian u64)

Note:

• The new header fields are added after the new header fields in EIP-4844 (see this section)

## Execution
- [ ] https://github.com/bluealloy/revm/issues/525

Note:

• The beacon root written to the contract has a particular structure and may be in multiple slots on the contract, see this section

## Consensus
- [ ] Add dummy fork to enable EIP

Additional context

No response