[Proposal] [Suggestion] Add Shader Slang support

**Issue description:**
It would be very simple for normal developers who do not know how to programme a shader, but with Slang that not only makes it easy to create shaders but also converts the HLSL shaders created earlier almost automatically.
Ref: https://shader-slang.com/

**Steps to reproduce:**
none (Because idk)

**Minimal reproduction project:**
none

**Flax version:**
1.11 or future versions