Reland "[HLSL][RootSignature] Implement initial parsing of the descriptor table clause params" (#136740)

This pr relands #133800.

It addresses the compilation error of using a shadowed name `Register`
for both the struct name and the data member holding this type:
`Register Register`. It resolves the issues my renaming the data members
called `Register` to `Reg`.

This issue was not caught as the current pre-merge checks do not include
a build of `llvm;clang` using the gcc/g++ compilers and this is not
erroneous with clang/clang++.

Second part of #126569

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Co-authored-by: Finn Plummer <finnplummer@microsoft.com>

0 files changed, 0 insertions, 0 deletions