Results 13 issues of Shing Liu

Support copy paste in Design Explorer ![Image](https://user-images.githubusercontent.com/8439181/169678188-e56ee6e6-cd9a-4167-b20d-dc764a9af13a.png)

enhancement
Design

Port occSketcher to Qt4.8 and OpenCASCADE6.8.0.

There are edges in the OpenNURBS Brep model. So if want to display the model in wireframe mode, it can display all the edges of the Brep.