This commit introduces a new script, `2fa.py`, which implements a custom action to retrieve 2FA/MFA codes using the `pyotp` library. The action extracts the OTP secret key from an environment variable and generates a time-based one-time password. Additionally, the script includes an example task demonstrating how to use the 2FA action within an agent-based workflow.
### Key Changes:
- New file `examples/custom-functions/2fa.py` added.
- Custom action `get_otp_2fa` to generate 2FA codes.
- Example usage of the action in an asynchronous context.
This addition enhances the functionality of the agent system by providing secure 2FA code retrieval capabilities.
