Feature request: don't print on import, or make printing configurable

This print statement runs on import, with no option to configure or disable it:
```python
>>> import rerankers
Torch not installed...
```

May I kindly request to not print on import, or to make printing configurable? Thank you! In general, it's good practice to limit code that runs on import to a minimum.

Source: https://github.com/AnswerDotAI/rerankers/blob/c5b2c19e7a84fc4c4dd3f31dea934297ce4b7bb1/rerankers/utils.py#L50