dozen: Add support for KHR_portability_subset
Not much to see here, we just happened to run into the fillModeNonSolid feature when trying the latest dzn with FNA and would like to be able to tell the driver we don't need point polygons, which the extension allows applications to do (among other things).
FNA3D sample: https://github.com/FNA-XNA/FNA3D/blob/master/src/FNA3D_Driver_Vulkan.c#L2796
Edited by Ethan Lee