Add WPF control

[Dustray]

Summary of feature

I want to put it into a WPF application to run.

[hjred]

For OpenGL rendering something similar to this https://github.com/opentk/GLWpfControl could be used.
This uses the NV_DX_interop OpenGL extension to share buffers between DirectX (WPF side) and OpenGL. So OpenGL renders directly to a buffer that is then given to DirectX for displaying. Despite having NV in the name, the author hints that this is supported on Intel, AMD and Nvidia GPUs.
Something similar might be possible for Vulkan as well.

[HurricanKai]

Vulkan has VK_KHR_external_memory_win32
I can see us providing a WPF control in the future, but we'd have to think about what the form factor would be (-> how does one interact with this? Do we provide multiple packages Silk.NET.Extensions.WPF.DX/GL/VK?)

[GeorgeS2019]

@Perksey WinUI 3 has been planned. WinUI 3 control supporting project reunion can be used as control in both WinForm and WPF.

[orosbogdan]

I am planning to write a 3D game with 2D UI based on WPF's support, this would greatly help.