[Feature Request] PS output variable names in reflection

Is your feature request related to a problem? Please describe.
One problem I have ran into lately is trying to validate pixel shader outputs (SV_Target[N]) against the attached render targets. I wanted to encode that information in the shader output variables name, however I don't think its possible to get the name through reflection, you can only get semantic names. It would be great to have that info during reflection.

Describe the solution you'd like
Name of the variable that is assigned to SV_Target[N]
For example the following PS shader:

struct Out {
    float4 color1 : SV_Target0;
};

Out main() {
    Out x;
    x.color1 = float4(1, 1, 1, 1);
    return x;
}

When using ID3D12ShaderReflection to get the output variable name:

...
D3D12_SIGNATURE_PARAMETER_DESC desc;
reflection->GetOutputParameterDesc(0, &desc);
log_debugl("%s", desc.Name); // desc.Name should contain the variable that writes to that output

Describe alternatives you've considered
One alternative was to parse disassembled blob with embedded debug info that contains type annotations, this proved to be a bit inconsistent as some shaders did not produce type annotations (could be my mistake too)

Start with the HLSL pixel-shader example and the ID3D12ShaderReflection::GetOutputParameterDesc call described in the issue. Trace how the output signature's D3D12_SIGNATURE_PARAMETER_DESC is produced and determine how the source variable name could be exposed. Done means desc.Name reports the variable assigned to SV_Target[N] through reflection.