Create COPYWIN defines for CopyWindowToVram calls

src/money.c

@@ -131,6 +131,6 @@ void DrawMoneyBox(int amount, u8 x, u8 y)
 void HideMoneyBox(void)
 {
     ClearStdWindowAndFrameToTransparent(sMoneyBoxWindowId, FALSE);
-    CopyWindowToVram(sMoneyBoxWindowId, 2);
+    CopyWindowToVram(sMoneyBoxWindowId, COPYWIN_GFX);
     RemoveWindow(sMoneyBoxWindowId);
 }