WIP: testing VK backend for linux
Testing iMSTK in LNX with Vulkan renderer backend. Modifications suggested in
Tested VK samples: Viewer, VKParticles and VKDecals.
PVD in PhysX needs to be turned off (-DPX_SUPPORT_PVD:BOOL=FALSE) otherwise the physX libraries will complain with undefined references.
I added a python script in Utilities that generates a CMakeList.txt file for the Examples folder replacing the GLOB directive by the add_subdirectory function. This is particularly useful to avoid compiling examples just commenting the corresponding example line.