Added a presentation of HARFANG 3D. (#2829)

* Added a presentation of HARFANG 3D to the readme file.

* Simplified the HARFANG description.

README.md

@@ -498,6 +498,13 @@ target="_blank"><img src="http://img.youtube.com/vi/ufl14_Ne5Lg/0.jpg"
 alt="Griftlands"
 width="640" height="480" border="0" /></a>
 
+## HARFANG 3D
+
+[HARFANG® 3D](https://www.harfang3d.com) is a **BGFX-powered** 3D visualization framework for C++, Python, Go, and Lua.
+It comes with a 3D editor, HARFANG Studio.
+
+![HARFANG-STUDIO](https://raw.githubusercontent.com/harfang3d/image-storage/main/portfolio/3.2.2/harfang-studio-cyber-city.png)
+
 [License (BSD 2-clause)](https://bkaradzic.github.io/bgfx/license.html)
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