Installer for Windows

[tchx84]

Now that Gameeky works in Windows, see #100. Maybe on of these options could be used https://www.msys2.org/wiki/Distributing/

[tchx84]

First step could be just to make a pacman file, and automate most of the process to just building and installing from that file.

[tchx84]

Something interesting to explore https://github.com/msys2/msys2-docker