platform: Wire up configuration

platform/platform.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <windows.h>
+
+#include "platform/config.h"
+
+HRESULT platform_hook_init_nu(
+        const struct nu_config *cfg,
+        const char *game_id,
+        const char *platform_id,
+        HMODULE redir_mod);