• feat: add generic chain ops paymaster
• use safetransfer for bootloader call

PR-Codex overview

This PR introduces a new IAccountFactory interface and enhances the AccountFactory and ChainOpsPaymaster contracts to include account sponsorship features. It also updates the project dependencies and adds a new library, solady, for improved functionality.

Detailed summary

• Added solady dependency to package.json.
• Modified foundry.toml to include additional library path.
• Introduced IAccountFactory interface in contracts/interfaces/IAccountFactory.sol.
• Updated AccountFactory to implement IAccountFactory.
• Added ChainOpsPaymaster contract with sponsorship functionality.
• Implemented methods for managing sponsored accounts and transactions in ChainOpsPaymaster.
• Included SPDX license identifiers in new Solidity files.

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