MacOS m1/m2 support - Githubissues

This PR adds support for Apple Silicon-based MacOS. I have no idea whether directories/filenames change on the x86_64 version (and have no way of testing it) so I constrained it to aarch64 only.

SC2PATHshould by default be set to /Applications/Starcraft II, for example with

fn main() -> SC2Result<()> {
    #[cfg(target_os = "macos")]
    std::env::set_var("SC2PATH", "/Applications/Starcraft II");
    ...

UltraMachine / rust-sc2

MacOS m1/m2 support #87