Update window.h

Fix compatibility of SAUCER_WINDOW_EDGE enum values ​​with C++ equivalents: https://github.com/saucer/saucer/blob/v6.0.1/include/saucer/window.hpp#L35-L41

Author: SerafimArts

include/saucer/window.h

@@ -25,10 +25,10 @@ extern "C"
 
     enum SAUCER_WINDOW_EDGE
     {
-        SAUCER_WINDOW_EDGE_TOP,
-        SAUCER_WINDOW_EDGE_BOTTOM,
-        SAUCER_WINDOW_EDGE_LEFT,
-        SAUCER_WINDOW_EDGE_RIGHT,
+        SAUCER_WINDOW_EDGE_TOP = 1 << 0,
+        SAUCER_WINDOW_EDGE_BOTTOM = 1 << 1,
+        SAUCER_WINDOW_EDGE_LEFT = 1 << 2,
+        SAUCER_WINDOW_EDGE_RIGHT = 1 << 3,
     };
 
     enum SAUCER_POLICY