A ready to use Vulkan triangle example for D

[Manuel König via Digitalmars-d-announce]

I now have initial window resizing added to your example:

https://github.com/Manuel-Koenig/VulkanTriangleD

It's still pretty much your code, but I structured it into several
functions. Window resizing does work in the sense that the triangle
gets stretched and redrawn, but the validation layer is still
complaining.