hash_list function is broken

[Varun2101]

Seems to be related to a recent commit (dab5966) where generate() was replaced with hash_list(). It was changed to be a classmethod but it still requires self as an input and uses self.passwords, which now fails.

https://github.com/mkhorasani/Streamlit-Authenticator/blob/56f9d75b003fe09f9e0df7d9ada65251f09fd269/streamlit_authenticator/utilities/hasher.py#L43-L44

Need to remove classmethod or change to a list input.