Xin 1.1 debug demo

See blobeee.neocities.org/gm8/xin for Xin 1.1 documentation.

Xin 1.1 is a Game Maker 8.0 extension by JacksonYarr which is in the public domain. Since I couldn't find any documentation about it on the internet, I made my own debug demo to share with the world, so anyone else crazy enough to still use Game Maker 8 can add Xinput gamepad support and extend the maximum controller limit to 4 (By default, GM8's limit is 2 DirectInput joysticks).