How to send messages between objc and rust interop

(like muda does) https://github.com/SSheldon/rust-objc https://github.com/tauri-apps/muda https://github.com/servo/core-foundation-rs

Reading...

https://sasheldon.com/blog/2015/08/02/objective-c-from-rust-objc_msgsend/

https://developer.apple.com/documentation/foundation/object_runtime/objective-c_runtime_utilities

https://cocoasamurai.blogspot.com/2010/01/understanding-objective-c-runtime.html