Add SGML↔Unicode conversion

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

UnitTests/pch.h

@@ -0,0 +1,25 @@
+/*
+	SPDX-License-Identifier: MIT
+	Copyright © 2023 Amebis
+*/
+
+#pragma once
+
+#define SECURITY_WIN32
+#define _WINSOCKAPI_	// Prevent inclusion of winsock.h in windows.h
+
+#include <stdex/base64.h>
+#include <stdex/errno.h>
+#include <stdex/exception.h>
+#include <stdex/hex.h>
+#include <stdex/idrec.h>
+#include <stdex/interval.h>
+#include <stdex/mapping.h>
+//#include <stdex/parser.h>
+#include <stdex/progress.h>
+#include <stdex/sal.h>
+#include <stdex/sgml.h>
+#include <stdex/string.h>
+#include <stdex/vector_queue.h>
+
+#include <CppUnitTest.h>