Include information on CREATE nounces differences between zkEVM and EVM

[idea404]

To get the same address on testnet as mainnet:

• If it used CREATE2, the same salt was used
• If it used CREATE, the same nonce was used at the time of the deployment

Note, btw, that there is a difference between us and Ethereum regarding (2). On Ethereum for CREATE the nonce od the transaction is used. We have a separate "deployment" nonce, which is used for CREATE and is incremented only for deployments

You need to ask for the rawNonce for an account (the param is uint256, you just need to pad the address with zeroes to the left) https://github.com/matter-labs/era-system-contracts/blob/3e954a629ad8e01616174bde2218241b360fda0a/contracts/NonceHolder.sol#L35
After you get the value it will be of form 2^128 * deploymentNonce + normalNonce. You just need to do the floored division (BigNumber.div(..) would suffice)