Support MSYS2 on Windows

[rhythmchicago]

Hi, guys! Really like the concept of this project.

I mostly run Windows, and I removed Visual Studio from the system. I'm trying to get bake to build using MSYS2, but keep getting stuck at various points. Before I go diving too deep into the rabbit hole, I was wondering if anyone else had attempted this, and if there was any advice. Also, it's been a long time since I've used premake, and I'm wondering if there's a good way to differentiate between a build for msvc and a build for MSYS2/Mingw.

Thanks in advance for any advice.