As a concrete example, can I add a template for Rust that will allow me to develop, compile, and debug the application from inside Xcode?
My guess is that I would need to build a new Project Template that would configure all the needed XCode parameters like Build Settings, Build Phases, etc.. Setting up the compiler for the new language and supporting the new language characteristics (maybe a language that works on top of LLVM would be easier).
I noticed there is a file type selection box in the file inspector.
Could I add languages to this list?