[FEAT] Support L1-L2 Communication

[dutterbutter]

📝 Description

Currently, anvil-zksync does not support L1-L2 communication, making it challenging to test or debug L1-L2 transactions. This limitation also hinders the creation of a more realistic local development and testing environment for cross-chain applications.

🤔 Rationale

Adding support for L1-L2 communication benefits:

1. Enabling seamless testing and debugging of L1-L2 transactions.
2. Providing a more realistic and deterministic local testing environment.
3. Facilitating the development of cross-chain applications.
4. Supporting future interop with multiple L2 instances.

Potential Approach

1. Perform genesis on anvil once.
2. Use anvil_dumpState to capture the deterministic state of L1.
3. Start anvil as a subprocess within anvil-zksync.
4. Use anvil_setState to initialize the L1 state in the subprocess.
5. Implement basic eth_sender and eth_watch components for communication between L1 and L2.
6. Enhance testability by introducing methods like anvil_commitBatch, anvil_proveBatch, and anvil_finalizeBatch for managing batches deterministically.