llvm-project

ad6575f2 - [HLSL] Adding support for root descriptors in root signature metadata representation (#139781)

[HLSL] Adding support for root descriptors in root signature metadata representation (#139781) - adds parsing from metadata into dxcontainer binary - adds validations as described in the spec - adds testing scenarios closes: [#126638](https://github.com/llvm/llvm-project/issues/126638) --------- Co-authored-by: joaosaffran <joao.saffran@microsoft.com>