Execution Engine from LightHouse consensus client.

1. Enables communicating with a Eth execution engine using engineapi over http or rpc endpoints.
2. You can use raw JSON RPC calls use the engine abstraction

compile

cargo build cargo test Runs the unit test Also runs a integration test expects a GETH node running on the same node at port

NOTE: for cargo test to pass you will need a single node geth/reth execution layer running on the same node as you are running the test. See https://github.com/bzbyte/ethlaunch repo for instruction to launch as single node geth.