Antarctic Coder

This PR provides an implementation of the `VK_KHR_acceleration_structure` extension which provides a gateway to ray queries and ray tracing pipelines. This PR is still very WIP due to not being...

At the moment, MoltenVK does not support raytracing(#427), and to support `VK_KHR_ray_tracing_pipeline` and `VK_KHR_ray_query`, we need to implement acceleration structures. PR #1954 (issue #1953) implemented `VK_KHR_deferred_host_operations` that finishes off the...