[HLSL] Codegen for indexing of sub-arrays of multi-dimensional resource arrays (#154248)

Adds support for accessing sub-arrays from fixed-size multi-dimensional global resource arrays.

Enables indexing into globally scoped, fixed-size resource arrays that have multiple dimensions when the result is a smaller resource array. 

For example:

```
RWBuffer<float> GlobalArray[4][2];

void main() {
  RWBuffer<float> SubArray[2] = GlobalArray[3];
  ...
}
```

The initialization logic is handled during codegen when the ArraySubscriptExpr AST node is processed. When a global resource array is indexed and the result type is a sub-array of the larger array, a local array of the resource type is created and all elements in the array are initialized with a constructor call for the corresponding resource record type and binding.

Closes #145426

0 files changed, 0 insertions, 0 deletions