Allow state override on eth_call and eth_estimateGas

[antonydenyer]

Description

Currently, you can not perform an eth_estimateGas or an eth_call on something that isn't in the 'correct' state as the evm will, correctly, return an error. For example, on an erc20 you may wish to send an approval followed by a transfer call.

You can estimate gas for the approve but not the transfer.
You can not check the result of a transfer without an approval first.

As a network participant, I would like access to be able to drop in and replace Besu in certain networks/tooling/RPC stacks.

Acceptance Criteria

Whilst it's not specified in the ethereum rpc spec the implementation should be based on the Geth rpc docs to allow a drop in replacement.

https://geth.ethereum.org/docs/interacting-with-geth/rpc/ns-eth#eth-call

[adarcanum]

gm, anyone working on this? I recently had to implement this on client side for jvm wouldn't mind submitting a PR for besu.

[antonydenyer]

gm, anyone working on this? I recently had to implement this on client side for jvm wouldn't mind submitting a PR for besu.

I'm not looking at it. I haven't had a chance to finish this!

[macfarla]

Block overrides https://geth.ethereum.org/docs/interacting-with-geth/rpc/objects#block-overrides

State overrides https://geth.ethereum.org/docs/interacting-with-geth/rpc/objects#state-override-set

[macfarla]

Created new issue for block overrides #7822

[macfarla]

#7801 implements this for eth_call, PR incoming to add the param parsing for eth_estimateGas