Discussion: Use Generics in Hardware Classes

As per [this comment](https://github.com/frc5183/librobot/pull/9#discussion_r1784986659), the suggestion to use generics in hardware classes to specify the return type of the raw hardware for lower level access. We should discuss this further.

- Original PR: https://github.com/frc5183/librobot/pull/9
- Commenter: @Baconing