List MLX whisper models.

[johnhaley81]

It would be nice if we could also use the MLX whisper models (like https://huggingface.co/mlx-community/whisper-large-v3-turbo) since they are optimized to be run on apple silicon. :)

[johnhaley81]

I looked into it and it seems like this is a pretty decent change to the application. I decided to fork the repo and try to implement it myself. You can track my progress here: https://github.com/johnhaley81/vocorize-app/issues