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
Create a groupbox folder and move all your files in.
Also add DEPENDPATH and ICNLUDEPATH in the pri file.