make with_provider_and_* take Arc<CryptoProvider> instead of CryptoProvider

[cpu]

Suggested by Adrian in discord:

Hey there, seems like hyper-rustls' with_provider_and_* methods take a CryptoProvider, meaning that it's impossible to call CryptoProvider::get_default() in a library and pass that as the argument (since getting an owned value out of the Arc is not really possible). I think the API should take an Arc, just like rustls' ClientConfig::with_provider, which it calls internally (by creating an Arc via .into()).

Ctz mentioned impossible might be an overstatement (e.g. due to Arc::unwrap_or_clone()) but in general there was agreement that the API should be changed to take an Arc.

We should consider making this change alongside future breaking API changes.

[djc]

On the rustls side I think we used an impl Into<Arc<T>> to make this change (somewhat) backwards compatibly. Might be an option here?