Platform: Improve Windows wstring support

CMakeLists.txt

@@ -111,6 +111,7 @@ endif()
 
 if(WIN32)
 	set(PLATFORM_SRC
+		platform/windows/strings.cpp
 		platform/windows/registry.cpp
 	)
 
@@ -527,6 +528,7 @@ if(LIBICSNEO_BUILD_UNIT_TESTS)
 		test/unit/livedataencoderdecodertest.cpp
 		test/unit/ringbuffertest.cpp
 		test/unit/apperrordecodertest.cpp
+		test/unit/windowsstrings.cpp
 	)
 
 	target_link_libraries(libicsneo-unit-tests gtest gtest_main)