Add versions for PySide6, PyQt6 & PySide2.

Break down examples into module files to make easier to read. Use
full-definitions on Enums (PyQt6 compatible, better documenting).
Add fixes for Qt6 versions & some general bugfixes.

pyqt5-pyqt6.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Black the SOURCE files to limit subsequent reformatting.
+black -l 128 $1
+
+# PyQt6 (built from PyQt5) --------------------------------------------------
+find $1 -type f -name "*.py" -print0 | xargs -0 sed -i 's/PyQt5/PyQt6/g'
+find $1 -type f -name "*.py" -print0 | xargs -0 sed -i 's/exec_/exec/g'
+find $1 -type f -name "*.py" -print0 | xargs -0 sed -i 's/qt-5/qt-6/g'
+
+black -l 128 $1