Add a way to override anvil-zksync tag/path

[itegulov]

🌟 Feature Request for hardaht-zksync plugins

💥 Plugin name

hardhat-zksync-node

📝 Description

Provide a way to override anvil-zksync's binary path and tag. Either via a CLI parameter or an env var, no strong opinion here.

🤔 Rationale

Adds flexibility to use a specific version of anvil-zksync as needed (latest might have bugs, drop compatibility with certain feature that a user relies on etc). Additionally, an option to use a locally built binary is great for debugging.

🖼️ Mockups/Examples

Just to give an idea of how this can look like, here is how I patched hardhat-zksync to override anvil-zksync path in my most recent debugging attempt:

let binaryPath: string;
const anvilPath = env.HARDHAT_ANVIL_ZKSYNC_PATH;
if (anvilPath) {
    console.log(`Using custom anvil-zksync binary at '${anvilPath}'`);
    binaryPath = anvilPath;
} else {
    binaryPath = await run(TASK_NODE_ZKSYNC_DOWNLOAD_BINARY, { force: false, tag });
}

📋 Additional Context

Add any other context or information about the feature request here.