evm: init from rollup node data dir

Context

This allows to bootstrap an evm sequencer using a rollup node data dir.

Manually testing the MR

Run a rollup node then try to bootstrap the evm node using the new command to initialize the evm node data dir:

./octez-smart-rollup-node --endpoint <endpoint> run batcher for <smart_rollup_addrs> with operators <operator_alias> --data-dir .smart-rollup-data-dir  --rpc-port 8733

./octez-evm-node init from rollup node .smart-rollup-data-dir --data-dir .evm-data-dir

./octez-evm-node run sequencer with endpoint localhost:8733 signing with <secret-key>   --data-dir .evm-data-dir

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