[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/string/wcsset_s.cpp

@@ -0,0 +1,19 @@
+//
+// wcsset_s.cpp
+//
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+//
+// Defines _wcsset_s(), which sets all of the characters of a null-terminated
+// string to the given character.
+//
+#include <corecrt_internal_string_templates.h>
+#include <string.h>
+
+extern "C" errno_t __cdecl _wcsset_s(
+    wchar_t* const destination,
+    size_t   const size_in_elements,
+    wchar_t  const value
+    )
+{
+    return common_tcsset_s(destination, size_in_elements, value);
+}