feat(l2): refactor L1 deployment script

[ilitteri]

Motivation

In the project's early stages, we relied on Foundry for contract deployment for simplicity. At this stage of the project, Foundry is not needed anymore.

Description

• It adds the binary ethereum_rust_l2_l1_deployer, which when executed, compiles and deploys the L1 contracts using CREATE2.
• Abstracts and integrates the call, send, and deploy logic to the EthClient in the eth_sender module.

[fborello-lambda]

I added the env variables needed to deploy the contracts in the .example.env file. And also fixed the clippy warnings.