Add precompiled header

precompiled.h

@@ -0,0 +1,20 @@
+/* Win32 user-mode API */
+#include <windows.h>
+#include <winternl.h>
+#include <setupapi.h>
+#include <unknwn.h>
+#include <d3d9.h>
+
+/* Win32 kernel-mode definitions */
+#include <ntdef.h>
+#include <ntstatus.h>
+#include <devioctl.h>
+#include <ntddser.h>
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>