RustCrypto KEM and Signature trait support

[thomwiggers]

FYI I just cut a new version of pcrypto-compat which implements the RustCrypto KEM and signature traits over the pqcrypto primitives. If it looks like a nice interface, I could make a PR here that implements it directly, and deprecate my crate. Let me know!

Originally posted by @rozbb in #39 (comment)

[thomwiggers]

Supporting RustCrypto's traits is very much something that I want to have. I don't think I'll have time before July to work on this myself (I'm basically AFK after next Wednesday and have some deadlines before) -- but I will definitely welcome any PR (though I won't be able to review anything in June.

I'll also create an issue on the OQS Rust bindings repository.

[rozbb]

Awesome! This'll be a little complicated because of all the codegen, but I'll take a crack at it. I'm also quite busy but this summer is a good time for me overall

[thomwiggers]

Yeah I do apologize for that; it's grown to be a bit of a beast 😅

[mouse07410]

Any progress since...?