Implement eth_simulatev1

[non-fungible-nelson]

was eth_multicallV1

Description

Implementation of ethereum/execution-apis#484
More detail.

This introduces a new RPC method eth_multicallV1 allows users to make complex RPC calls to Ethereum nodes. Compared to eth_call, eth_multicallV1 has following extra features:

• You can encapsulate multiple dependent calls in a single call
• The calls happen inside blocks. You can simulate multiple blocks that can be arbitrary far from each other
• Block variables can be overridden (e.g. time)
• Account state can be overridden for every block (e.g. code and balance)
• It is possible to override precompiles (e.g. ecrecover) with arbitrary EVM code
• ETH transfers produce logs similar to ERC20 logs
• Validation mode. You can choose to do very strict simulation or more relaxed one similar to eth_call

Presentation: https://docs.google.com/presentation/d/1lEaqHTY3ud8pe6VAFwLkb-jdoHpTMBfuF1K9OKy-azs/edit#slide=id.p

As a node runner, I want to be able to have access to all standard RPCs. This includes the speced RPC eth_multicallV1.

Acceptance Criteria

• Passing any released reference tests in the execution APIs
• Passing Hive tests: https://github.com/KillariDev/rpctestgen
• Results consistent with Geth, Nethermind and/or other clients
• Performance in line with Geth and/or other clients
• Tested on Mainnet state