Request for a Vulkan bindings refresh when possible

# Summary of feature

Please consider refreshing the Silk.NET Vulkan bindings against a recent Khronos Vulkan registry and publishing an updated NuGet package when possible.

I understand that Silk.NET 2.x is currently in maintenance mode and that maintainer time is limited, so this is only a request if it fits within the current maintenance scope.

One concrete API addition that would be useful for downstream projects is the recently ratified `VK_EXT_descriptor_heap` extension:

https://docs.vulkan.org/refpages/latest/refpages/source/VK_EXT_descriptor_heap.html

# Comments

No additional comments.

# Does this have a proposal?

I do not think a Silk.NET proposal is needed for this request, since this is not asking for a breaking API design change. The request is for a generated Vulkan bindings refresh based on the upstream Khronos Vulkan registry.

The issue names the upstream Khronos Vulkan registry and the VK_EXT_descriptor_heap reference; start by checking the registry and extension specification for the current definitions. Done means the generated Silk.NET Vulkan bindings reflect the refresh and an updated NuGet package is published.

Written by the indexing model from the issue text.