Rust support

[Xe]

• [x] Basic working in synchronous rust
• [x] Automagically build the Go library with build.rs
• [ ] Building from the bundled tarball in #8
• [ ] Async support
  • [x] Dialing async sockets
    • [ ] doing it asynchronously
  • [ ] creating an async listener
    • [ ] asynchronously
• [ ] bindings to make Axum server listener
• [ ] Hyper HTTP client
• [ ] Documentation
• [ ] Review by someone that understands how to do this correctly/safely
• [ ] More examples
• [ ] ???
• [ ] Profit!