Add txiki.js(JavaScript engine) (fffaraz#1548)

Author: toge

README.md

@@ -1039,6 +1039,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [SIP](https://riverbankcomputing.com/software/sip/intro) - C or C++ Bindings Generator for Python v2 and v3. [GPL]
 * [sol2](https://github.com/ThePhD/sol2) - A C++ <-> Lua API wrapper with advanced features and top notch performance. [MIT]
 * [SWIG](https://github.com/swig/swig) - A wrapper/interface Generator that let you link your c++ code to Javascript, Perl, PHP, Python, Tcl and Ruby. [GPL/Output not licensed] [website](http://www.swig.org/)
+* [txiki.js](https://github.com/saghul/txiki.js) - A tiny JavaScript runtime. [MIT]
 * [V7](https://github.com/cesanta/v7) - An embedded JavaScript engine. [GPL2]
 * [V8](https://v8.dev) - A fast JavaScript engine by Google that can be embedded into any C++ application. [BSD]
 * [v8pp](https://github.com/pmed/v8pp) - Header-only library to expose C++ classes and functions into V8 to use them in JavaScript code. [BOOST] [website](https://pmed.github.io/v8pp/)