[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT

sdk/lib/ucrt/filesystem/wmkdir.cpp

@@ -0,0 +1,24 @@
+//
+// wmkdir.cpp
+//
+//      Copyright (c) Microsoft Corporation. All rights reserved.
+//
+// The _wmkdir() function, which creates a directory.
+//
+#include <corecrt_internal.h>
+#include <direct.h>
+
+
+
+// Creates a directory.  Returns 0 on success; returns -1 and sets errno and
+// _doserrno on failure.
+extern "C" int __cdecl _wmkdir(wchar_t const* const path)
+{
+    if (!CreateDirectoryW(path, nullptr))
+    {
+        __acrt_errno_map_os_error(GetLastError());
+        return -1;
+    }
+
+    return 0;
+}