Feat: Introduce zkSync

[juliopavila]

Description

This pull request introduces support for zkSync Era into the project, enabling deployments and interactions with zkSync networks.

Added zkSync support: Installed and configured the following plugins:

• @matterlabs/hardhat-zksync-solc for compiling contracts with zkSync’s Solidity compiler (zksolc).
• @matterlabs/hardhat-zksync-deploy for deploying contracts to zkSync networks.
• @matterlabs/hardhat-zksync-verify for verifying contracts on zkSync explorers.

Updated hardhat.config.ts to include zkSync Era mainnet and testnet configurations:

• Added zkSyncMainnet and zkSyncSepoliaTestnet networks with appropriate URLs and settings.
• Configured the zksolc compiler version and settings, including optimizer runs and library links.
• Ensured that the etherscan configuration includes the ZKSYNC_EXPLORER_API_KEY for contract verification.

Updated deployment scripts:
- Modified deploy-mastercopies.ts to use Wallet from zksync-ethers instead of zksync-web3 for compatibility with the Deployer from @matterlabs/hardhat-zksync-deploy.
- Resolved type incompatibility issues between Wallet instances.
- Adjusted import statements to ensure correct versions of Wallet and Deployer are used.
- Implemented conditional logic to handle deployments on zkSync networks versus Ethereum networks.
- For zkSync networks, used Deployer and Wallet from zkSync tools.
- For Ethereum networks, maintained existing deployment flow using ethers and custom providers.

Compiled and deployed missing libraries:
- Addressed compilation warnings about missing libraries by running npx hardhat deploy-zksync:libraries.
- This step compiles and deploys any Solidity libraries that the contracts depend on, which is required by zkSync.
- Updated hardhat.config.ts with the addresses of deployed libraries under zksolc.settings.libraries to enable proper linking during contract compilation.