Add tkdesigner to GUI libraries list (#3262)

Author: Severian0

README.md

@@ -860,6 +860,7 @@ _Libraries for working with graphical user interface applications._
   - [pygobject](https://github.com/GNOME/pygobject) - Python Bindings for GLib/GObject/GIO/GTK+ (GTK+3).
   - [PyQt](https://www.riverbankcomputing.com/static/Docs/PyQt6/) - Python bindings for the [Qt](https://www.qt.io/) cross-platform application and UI framework.
   - [pyside](https://github.com/pyside/pyside-setup) - Qt for Python offers the official Python bindings for [Qt](https://www.qt.io/), this is same as PyQt but it's the official binding with different licensing.
+  - [tkdesigner](https://github.com/ParthJadhav/Tkinter-Designer) - Generates Tkinter interfaces from Figma designs using the Figma API.
   - [tkinter](https://docs.python.org/3/library/tkinter.html) - (Python standard library) The standard Python interface to the Tcl/Tk GUI toolkit.
   - [toga](https://github.com/beeware/toga) - A Python native, OS native GUI toolkit.
   - [wxPython](https://github.com/wxWidgets/Phoenix) - A blending of the wxWidgets C++ class library with the Python.