Maybe we should change _tls-any to tls?

[honsunrise]

If a project uses a pre-process crypto provider, specifying the feature tls-ring or tls-aws-lc is not necessary; we only need _tls-any. Therefore, renaming it to tls would be more user-friendly for this use case.

https://github.com/hyperium/tonic/blob/9606c5bb2011bbe326fa02523da350f6437b867e/tonic/Cargo.toml#L31