Misc changes

[stephantul]

Hi!

Thanks for the great work. I added some QoL changes, feel free to cherrypick or reject this PR altogether if it doesn't suit your needs.

changes:

• removed .DS_Store, add .DS_Store to .gitignore
• removed logging.basicConfig, because this overrides user settings upon import, which makes the code difficult to integrate into larger projects. (i.e., when I set my own logging, and then import this, I get your logging settings, not mine, which is difficult to debug)
• added type hints to all functions
• added dataclasses to functions that had dict as a type, which makes for a more pleasant user experience
• removed typing imports for built-ins. You indicate that this code is python >= 3.9. From 3.9 onwards, type imports are no longer necessary.
• turned (1024 * 1024) into a constant
• turned the default model into a private constant
• removed the optionals from the initializer, as these arguments were not really optional
• didn't initialize the model, tokenizer, and pipeline attributes to None because this makes typing difficult.

The code currently doesn't pass mypy type checking. I didn't go for this because I don't think you actually want this, but I could also add it if you like.

Let me know what you think. Feel free to reject if you think this is overly nitpicky 😊