Invoking iMSTK api outside iMSTK with Vulkan option turned on
Reported by @sjh26
"When I use that code to include imstk in my modue, none of the Vulkan related data is passed through. In order to get the module to compile with just a simple include of a core imstk file, I have to
- set the iMSTK_USE_Vulkan define in my own code
- explicitly include Vulkan in my CmakeLists so that I can provide its include directories to my module".