Translation of output messages

[ericwb]

Is your feature request related to a problem? Please describe. It may be useful to translate our strings. Not every user of Bandit necessarily has English as their first language. So support more languages for the output might help adoption and usefulness in the community.

Describe the solution you'd like All output strings to use standard standard Python ways of internationalization.

Describe alternatives you've considered English-only, the model today

Additional context n/a