SDK add Qt Demo

instrustar

1,demo-VC       

       a Demo written with VC

2,demo-Labview       
        a Demo written with Labview,only test in windows
3,dome-Python       
        a Demo written with Python,only test in windows
4,DllTest       
        a  command line Demo written with c++, test in windows and ubuntu linux
5,DllTestQt
        a Demo written with Qt, test in windows and ubuntu linux
        Note:To start Qt, please use sudo. This ensures that libusb can correctly detect the device

https://github.com/instrustar-dev/SDK