Validate chain id in the account contract

[spalladino]

Include the chainId as part of the payload to the account contract. Add an oracle call to retrieve the current chainId from Noir. Validate that both match in the account contract entrypoint.

[LeilaWang]

Adding an oracle call to get chainId might not be needed, since that's something being done privately. The prover gets to control what's being returned to the simulator. But what will be great to do, is adding the chainId to the final public inputs, and check it all the way up, so that a proof can only be submitted to the specific chain.

[spalladino]

You're totally right! Closing this issue in favor of #705.