Add loaders.cache to Windows wheel

Author: RedFantom

setup.py

@@ -158,7 +158,8 @@ def copy_to_target(self, target: str):
 
     specials={
         "libpixmap.dll": "/lib/gtk-2.0/2.10.0/engines/", 
-        "libwimp.dll": "/lib/gtk-2.0/2.10.0/engines/"}
+        "libwimp.dll": "/lib/gtk-2.0/2.10.0/engines/",
+        "loaders.cache": "/lib/gdk-pixbuf-2.0/2.10.0/"}
     specials.update({"libpixbufloader-{}.dll".format(fmt): "/lib/gdk-pixbuf-2.0/2.10.0/loaders/"
                      for fmt in ["ani", "bmp", "gif", "icns", "ico", "jpeg", "png", "pnm", "qtif", "svg", "tga", "tiff", "xbm", "xpm"]})
     DependencyWalker("libgttk.dll", specials=specials).copy_to_target("gttk")