Utility to get the opengl texture associated with a x11 window.\
It is recommended to use this over https://git.dec05eba.com/window-texture/about/ since EGL window textures are more reliable than GLX window texture, especially on nvidia.
For example when you use a compositor such as picom you cant get window textures on nvidia (only one application gets access to window textures at a time).
However with EGL there is no such issue (limitation) on nvidia (nor amd and intel).

# Dependencies
gl and egl (both are part of libglvnd), x11, xcomposite