QRadioGroupBox and QCheckGroupBox with abstraction class

Add QAbstractButtonGroupBox class abstraction for the next class
Add QRadioGroupBox widget class
Add QCheckGroupBox widget class

Integration with deisgner
Add QCheckGroupBoxPlugin class
Add QRadioGroupBoxPlugin class
Probablyt u can jsut get the button ptr, and call layout->removeWidget(button) so u don't have to delete the item yourself.