ams: support building unit test programs on windows/linux/macos

libraries/libstratosphere/include/stratosphere.hpp

@@ -16,9 +16,18 @@
 
 #pragma once
 
+/* Ensure that on windows we use lean-windows headers. */
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 /* libvapours (pulls in util, svc, results). */
 #include <vapours.hpp>
 
+#if defined(ATMOSPHERE_OS_WINDOWS)
+#include <stratosphere/windows.hpp>
+#endif
+
 /* Libstratosphere diagnostics. */
 #include <stratosphere/diag.hpp>