[CRT][NTDLL][MSVCRT] Add _swprintf implementation

sdk/lib/crt/printf/_swprintf.c

@@ -0,0 +1,13 @@
+/*
+ * COPYRIGHT:       GNU GPL, see COPYING in the top level directory
+ * PROJECT:         ReactOS crt library
+ * FILE:            lib/sdk/crt/printf/_swprintf.c
+ * PURPOSE:         Implementation of _swprintf
+ * PROGRAMMER:      Timo Kreuzer
+ */
+
+#define _sxprintf _swprintf
+#define USE_COUNT 0
+#define _UNICODE
+
+#include "_sxprintf.c"

sdk/lib/crt/printf/printf.cmake

@@ -2,6 +2,7 @@
 list(APPEND LIBCNTPR_PRINTF_SOURCE
     printf/_snprintf.c
     printf/_snwprintf.c
+    printf/_swprintf.c
     printf/_vscprintf.c
     printf/_vscwprintf.c
     printf/_vsnprintf.c