zig_load() loads a shared library compiled from ‘Zig’
(.so / .dll).zig_bind() binds exported functions. Arguments are
passed by value (i32, f64, bool,
strings, and vectors as pointers) and return values (void,
i32, f64, bool, strings) are
supported.zig_call() compiles and runs ‘Zig’ source or snippets
from R.