EVM Node: Add --replicate to run sandbox

This argument can be used to have a sandbox endpoint shadowing an existing chain locally. This can be useful for a number of use cases, notably interacting with the chain in a sandbox environment that reflects changes happening on the network in real time, or evaluating the impact of a (future) kernel on realistic traffic (using --kernel).

This was already useful to assert that D indeed address the gas price spikes we are seeing on Mainnet.

Manually testing the MR

octez-evm-node run sandbox --data-dir sandbox --init-from-snapshot --network mainnet --kernel /path/to/evm_kernel.wasm --replicate

This will start a Mainnet sandbox with the latest kernel, applying blueprints from the official relay. I was able to compare the gas price on various blocks and witness the gas price does not change with D 🎉

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR