ARM64 support for Windows and Linux

Currently, we publish the game binaries only for the platforms supported by Raylib-CSharp, namely:
- linux-x64
- macos-arm64
- win-x64

We should add support at least for
- linux-arm64
- win-arm64

Either figure out how to pack Raylib and add it ourselves, or (better) contribute the binaries back to Raylib-CSharp.

Note that these agents are available on GitHub Actions now, see my CI scripts for [Mandelbrot](https://github.com/ForNeVeR/Mandelbrot/) for details.