[HLSL] Add parsing for the resource dimension attribute. (#185039)
The resource attribute was added, but the code to be able to parse it
as we do with other resource attributes was missing. This means we are
not able to test the attribute in isolation.
This change adds the parsing for the attribute, and adds more testing
for it.
Assisted-by: Gemini
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afedb030 - [HLSL] Add parsing for the resource dimension attribute. (#185039)
