Add support for DX11On12

[CXCubeHD]

Summary of feature

This feature adds support for the DirectX11On12 layer. (ID3D11On12Device)

Comments

DX11On12 allows to use a DirectX11 device on top of a DirectX12 device. This can be used to overcome some limitations where the application is being forced to use DX12 while the 2D graphics library only supports DirectX11.

Does this have a proposal?

No.

[Perksey]

Resolved in #1193