Set up a PySide6 binding process for SDL symbols.

To make this very concrete, just do one thing:

Take the breadcrumb widget that you have created for the IV and make it usable from Pyside6 (so that it can be in combination with other PySide6 widgets). This is what shiboken6 is meant for, but I don't know how to use it. (In Python: from spacecreator import breadcrumb)
Document all the steps to achieve that inside the taste VM, from the creation of the XML files for shiboken to the actual binding compilation/build/test.
I have to know how to deal with g++ version used vs pyside6 binary installed from pip (do I always need to build the bindings after installing pyside6, these kind of things).

If you can do it for Breadcrumb, that's sufficient for me, then I can apply the same method to port some of my PySide6 widgets to C++ (to speed them up) and mix them with Python code.