Simulink C to Rust library wrapper and binder

The template directory contains the blueprint for importing generated C code from Simulink into Rust.

Simply copy and rename the template directory, then:

• in Cargo.toml, set the package name,
• copy all the Simulink source (.c) and header (.h) files into the sys folder,
• in build.rs, pass the name of the Rust structure that will implement the Rust version of the Simulink controller as argument to simulink_rs::Sys::new(Some("...")),

and finally run cargo build to check that the new crate is build without errors.