Created for qt learning purpose

prequesites: install opencascade, openscenegraph and qt

sudo apt-get install build-essential oce openscenegraph qt5-default boost

build steps:

• create bin directory
• go to bin directory
• run cmake ..
• run make
• Qtworkbench executable will be generated in build folder

Create appimage:

• run appbuild.sh

• Added sources from Opencascade tutorial to create bottle(should be removed)
• There is a feature to open .step files

• Need to test CMake build on windows to confirm cross compatibility