`cryptofuzz` module

[brycx]

Some time back I asked Guido Vranken, the author of cryptofuzz, whether a module for Orion could be added, which was no problem.

I started some minimal work, but unfortunately was thrown out of it. It would still be great to have Orion fuzzed against other crypto libs in OSSFuzz through cryptofuzz. AFAIK, there now exists more Rust-based modules than back then (ring, librustsecpk256, RustCrypto) which can be valuable to refer to if working on a module for Orion.

This most likely requires a substantial amount of work, familiarity with C++, Rust FFI and should probably be its own repository in this GH organization.