Add Tkinter Designer to GUI Development Section.

[ParthJadhav]

Tkinter Designer was created to speed up the GUI-development process in Python. It uses the well-known design software Figma to make creating beautiful Tkinter GUIs in Python a piece of cake.

Tkinter Designer is Featured on Awsomeopensource.com in Top 19 GUI Applications list.

• https://awesomeopensource.com/projects/gui-application

Here are more mentions of Tkinter Designer - https://docs.google.com/document/d/1vNRZY2XuDtG9MYxAEFAfah4uSqIgpOJCqci7xyV7Nmk/edit?usp=sharing