[directx-dxc] Require DXC compatibility on macOS platform

[LazyJazz]

Is your feature request related to a problem? Please describe.

Currently the port is banned on macOS. However, it could be compiled on macOS and is necessary because Vulkan could run on macOS while dxc support compiling HLSL to SPIR-V. This problem is critical for cross-platform compatibility of the library.

Proposed solution

Add a process for macOS installation.
Since official release from DirectX Shader Compiler doesn't have a build for macOS. It's necessary to build from source.

Describe alternatives you've considered

No response

Additional context

No response

[LazyJazz]

I've proposed a possible solution with draft #44649 to solve this issue. It works on my MacBook, but I'm not sure whether I applied non-standard operations or not.