[Merge] Make Teku working with Geth EE

[Nashatyrev]

PR Description

A lot of API compatibility issues fixed

With these changes Teku works with Geth EE , successfully produces and imports blocks with ExecutionPayload composed by Geth EE

Run instructions

1. Build and start Geth EE as described here
   NOTE: as per spec the GENESIS_GAS_LIMIT should be 30 000 000 so make sure (or change) the Geth genesis file to have value "gasLimit": "0x1C9C380". With that value the block hash would be 0x3b8fb240d288781d4aac94d3fd16809ee413bc99294a085798a589dae51ddd4a
2. Generate consensus genesis state:

> teku genesis mock \
  --eth1-block-hash 0x3b8fb240d288781d4aac94d3fd16809ee413bc99294a085798a589dae51ddd4a \
  --output-file ./local-genesis.ssz \ 
  --network=minimal \
  --Xnetwork-altair-fork-epoch=0 \
  --Xnetwork-merge-fork-epoch=0 \
  --validator-count=256

3. Run a Teku node:

> teku \
  --eth1-endpoints=http://localhost:8545 \
  --ee-fee-recipient-address=0xfe3b557e8fb62b89f4916b721be55ceb828dbd73 \
  --Xinterop-enabled=true \
  --Xinterop-number-of-validators=256 \
  --Xinterop-owned-validator-start-index=0 \
  --Xinterop-owned-validator-count=256 \
  --network=minimal \
  --Xnetwork-altair-fork-epoch=0 \ 
  --Xnetwork-merge-fork-epoch=0 \ 
  --p2p-enabled=false \
  --initial-state ./local-genesis.ssz

Fixed Issue(s)

Documentation

• I thought about documentation and added the documentation label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

[tbenr]

LGTM with some comments

[Nashatyrev]

Updated to the final interop spec version. Mostly engine_preparePayload return type reverted back to object instead of value

[Nashatyrev]

Something weird happening with CI checks indication on github :/