Add libqt6zig (#154)

Author: rcalixte

README.md

@@ -661,6 +661,7 @@ TOC is generated by [markdown-toc](https://github.com/jonschlinkert/markdown-toc
 - [Capy](https://github.com/capy-ui/capy) : 💻Build one codebase and get native UI on Windows, Linux and Web. [capy-ui.org](https://capy-ui.org/)
 - [david-vanderson/dvui](https://github.com/david-vanderson/dvui) : Easy to Integrate Immediate Mode GUI for Zig.
 - [kassane/qml_zig](https://github.com/kassane/qml_zig) : QML bindings for the Zig programming language.
+- [rcalixte/libqt6zig](https://github.com/rcalixte/libqt6zig) : Qt 6 for Zig.
 - [MoAlyousef/zfltk](https://github.com/MoAlyousef/zfltk) : Zig bindings for the FLTK gui library.
 - [Aransentin/ZWL](https://github.com/Aransentin/ZWL) : A Zig Windowing Library.
 - [batiati/IUPforZig](https://github.com/batiati/IUPforZig) : IUP (Portable User Interface Toolkit) bindings for the Zig language.