[Suggestion] Support for Vulkan graphics

[MisterSheeple]

I think Vulkan support is something that should be considered, at least at a low priority for now. I'm suggesting this because I think Vulkan would be good to have as a means of future-proofing the game's graphics for non-Windows systems. Not that we're going to see any vendors dropping support for OpenGL anytime soon, but I think it would be good to have in case any advancements are made to the game's graphics that can't be done in OpenGL.