Fix instance creation error on VULKAN_SDK >= 1.3.216 by opting-in to extension VK_KHR_PORTABILITY_subset

[a-earthperson]

Related issue posted here: Encountered VK_ERROR_INCOMPATIBLE_DRIVER.

Proposed fix:

1. Adds the VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR bit to the VkInstanceCreateInfo structure flags.
2. Adds VK_KHR_portability_enumeration, VK_KHR_get_physical_device_properties2 to the instance extensions list.

[antiagainst]

Yeah for Apple platforms going through MoltenVK would be requiring that. Please feel free to send out a pull request for it!

[a-earthperson]

Yeah for Apple platforms going through MoltenVK would be requiring that. Please feel free to send out a pull request for it!

Happy to do it. I have a local branch with the fix working, but I'm unable to push since I don't have write access on remote.