feat: More Rust idiomatic, type safe API

[DougAnderson444]

This is more of a minor issue, but helps with using the crate.

Right now the crate deals with a lot of primitive values that could be typed to make it more type safe, which results in a clear API which is less error prone (or not prone to user error at all).

Also little things like using get_ getters aren't idiomatic Rust and can be improved for readability.

Feature would be to type the API such that we gain these benefits.

Happy to submit a Pull Request for this

[itzmeanjan]

I agree with you. I'd like to make this crate more user-friendly, avoiding pitfalls as much as possible. And I'd welcome contributions.