- Retrieves indexed withdrawal objects with blocks over RPC. - Includes system-tests in CI workflow. - Uses external fixturenet stack in CI tests. Depends on - cerc-io/ipld-eth-db#7 - cerc-io/plugeth-statediff#25 To induce and test validator withdrawals: - cerc-io/lighthouse#1 - cerc-io/fixturenet-eth-stacks#19 - cerc-io/system-tests#16 Reviewed-on: #265