namespaceapi: initial version

Signed-off-by: Simon Rozman <simon@rozman.si>

tun/wintun/namespaceapi/mksyscall.go

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
+ */
+
+package namespaceapi
+
+//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go namespaceapi_windows.go