Create dedicated framework integration examples

[mwestphal]

Context the libf3d can be used for a quick and easy 3d viewer, but how can it be integrating into existing framework ? Let's create example showing how to.

Suggested solution Create dedicated framework integration examples, demonstrating how to integrate the libf3d with well known open source frameworks.

There is an existing code, Exhibit, that integrates libf3d into Gnome using python: https://github.com/Nokse22/Exhibit

Related to: https://github.com/f3d-app/f3d/issues/1670

Actual first steps

• Create a small interactive libf3d application using QML
• Create a small interactive libf3d application using Qt6
• Create a small interactive libf3d application using GTK
• Create a small interactive libf3d application using fltk
• Create a small interactive libf3d application using wxWidgets