Etherlink: Performance RPS

What

In this MR, I use Locust to benchmark the RPS (Requests Per Second) of Etherlink.

Why

To measure the performance of Etherlink.

How

To do that, I wrote a Tezt to create an Etherlink scenario. I gathered the information needed for the RPC requests and sent it to Locust using an intermediary config file. Then, I launch Locust. The result of the Tezt was written to a CSV file in the Locust folder: src/bin_testnet_scenarios/locust/<timestamp>.

Manually testing the MR

dune exec src/bin_testnet_scenarios/main.exe -- --file evm_rollup.ml rps -v

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