[.NET] Conditioanal compilation option 적용하기

https://docs.microsoft.com/ko-kr/dotnet/csharp/language-reference/preprocessor-directives

https://blog.magnusmontin.net/2018/11/05/platform-conditional-compilation-in-net-core/

https://stackoverflow.com/questions/479979/msbuild-defining-conditional-compilation-symbols

https://social.msdn.microsoft.com/Forums/vstudio/en-US/c025c732-a7b7-44d6-8b3b-5bd89ddca338/ho-to-pass-additional-conditional-compilation-symbols-on-msbuild-commandline?forum=msbuild

https://stackoverflow.com/questions/61122780/how-to-check-for-conditional-compilation-symbols-in-csproj

https://docs.microsoft.com/en-us/visualstudio/msbuild/msbuild-conditional-constructs?view=vs-2019