UnitTest: redesing to avoid #include ".cpp" in Xcode

Each unit test .cpp file is not a separate compilation unit in Xcode project
like it is in Visual Studio. Hopefully, Visual Studio test tool still likes
this arrangement.

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

UnitTests/pch.hpp

@@ -1,4 +1,4 @@
-/*
+/*
 	SPDX-License-Identifier: MIT
 	Copyright © 2023-2024 Amebis
 */
@@ -39,3 +39,84 @@
 #include <filesystem>
 #include <list>
 #include <thread>
+
+namespace UnitTests
+{
+	TEST_CLASS(hash)
+	{
+	public:
+		TEST_METHOD(crc32);
+		TEST_METHOD(md5);
+		TEST_METHOD(sha1);
+	};
+
+	TEST_CLASS(math)
+	{
+	public:
+		TEST_METHOD(mul);
+		TEST_METHOD(add);
+	};
+
+	TEST_CLASS(parser)
+	{
+	public:
+		TEST_METHOD(wtest);
+		TEST_METHOD(sgml_test);
+		TEST_METHOD(http_test);
+	};
+
+	TEST_CLASS(pool)
+	{
+	public:
+		TEST_METHOD(test);
+	};
+
+	TEST_CLASS(ring)
+	{
+	public:
+		TEST_METHOD(test);
+	};
+
+	TEST_CLASS(sgml)
+	{
+	public:
+		TEST_METHOD(sgml2str);
+		TEST_METHOD(str2sgml);
+	};
+
+	TEST_CLASS(stream)
+	{
+	public:
+		TEST_METHOD(async);
+		TEST_METHOD(replicator);
+		TEST_METHOD(open_close);
+		TEST_METHOD(file_stat);
+	};
+
+	TEST_CLASS(string)
+	{
+	public:
+		TEST_METHOD(sprintf);
+	};
+
+	TEST_CLASS(unicode)
+	{
+	public:
+		TEST_METHOD(str2wstr);
+		TEST_METHOD(wstr2str);
+		TEST_METHOD(charset_encoder);
+		TEST_METHOD(normalize);
+	};
+
+	TEST_CLASS(watchdog)
+	{
+	public:
+		TEST_METHOD(test);
+	};
+
+	TEST_CLASS(zlib)
+	{
+	public:
+		TEST_METHOD(test);
+	};
+}