LibGL: Fix triangle winding calculation

Since we operate in screen space where y points down we need to reverse
what is considered clock wise and what is considered counter clockwise.

The rasterizer always expects triangles with a consistent winding order
thus swap 2 vertices if necessary to reverse the winding before passing
the triangle on to the rasterization stage.

Userland/Applications/3DFileViewer/main.cpp

@@ -60,7 +60,7 @@ private:
         start_timer(20);
 
         GL::make_context_current(m_context);
-        glFrontFace(GL_CW);
+        glFrontFace(GL_CCW);
         glEnable(GL_CULL_FACE);
         glEnable(GL_DEPTH_TEST);