Added tsmp library

Author: fabian-jung

README.md

@@ -844,6 +844,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [Nameof](https://github.com/Neargye/nameof) - Header-only C++17 library provides nameof macros and functions to obtain the simple name of variable, type, function, macro, and enum. [MIT]
 * [Ponder](https://github.com/billyquith/ponder) - A C++11 library for reflection. [MIT]
 * [RTTR](https://github.com/rttrorg/rttr) - A C++11 library for reflection. [MIT] [website](http://www.rttr.org)
+* [TSMP](https://github.com/fabian-jung/tsmp) - An intrusion and macro-free C++20 library for static reflection. It uses libclang to extract reflection data from your source code and makes it usable via template specialization. [MIT]
 * [visit_struct](https://github.com/cbeck88/visit_struct) - A miniature library for struct-field reflection in C++. [Boost]
 * [Refureku](https://github.com/jsoysouvanh/Refureku) - A C++17 runtime reflection and code generation library. [MIT]