Updates the Root Signature metadata parser to extract version
information. This requirement was added after the initial parser
implementation.
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Co-authored-by: joaosaffran <joao.saffran@microsoft.com>
Adding support for Root Signature Flags Element extraction and writing
to DXContainer.
- Adding an analysis to deal with RootSignature metadata definition
- Adding validation for Flag
- writing RootSignature blob into DXIL
Closes: [126632](https://github.com/llvm/llvm-project/issues/126632)
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Co-authored-by: joaosaffran <joao.saffran@microsoft.com>