[DirectX] Handle dx.RawBuffer in DXILResourceAccess (#121725)

This adds handling for raw and structured buffers when lowering resource
access via `llvm.dx.resource.getpointer`.

Fixes #121714

[DirectX] Remove the "checked" variants of `dx.resource.load` (#120778)

We'd introduced separate versions of `llvm.dx.resource.load` with a
struct return to handle the CheckAccessFullyMapped case w

[DirectX] Remove the "checked" variants of `dx.resource.load` (#120778)

We'd introduced separate versions of `llvm.dx.resource.load` with a
struct return to handle the CheckAccessFullyMapped case without making
the IR for the common case unnecessarily complicated. However, at this
point the common case is really `resource.getpointer`, so the ergonomics
of a simplified version of `load` don't actually gain us as much as the
cost of having multiple opcodes.

Drop the `dx.resource.loadchecked` functions and have `dx.resource.load`
consistently return `{element_type, i1}`.

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[DirectX][SPIRV] Consistent names for HLSL resource intrinsics (#120466)

Rename HLSL resource-related intrinsics to be consistent with the naming
conventions discussed in [wg-hlsl:0014].

This is

[DirectX][SPIRV] Consistent names for HLSL resource intrinsics (#120466)

Rename HLSL resource-related intrinsics to be consistent with the naming
conventions discussed in [wg-hlsl:0014].

This is an entirely mechanical change, consisting of the following
commands and automated formatting.

```sh
git grep -l handle.fromBinding | xargs perl -pi -e \
's/(dx|spv)(.)handle.fromBinding/$1$2resource$2handlefrombinding/g'
git grep -l typedBufferLoad_checkbit | xargs perl -pi -e \
's/(dx|spv)(.)typedBufferLoad_checkbit/$1$2resource$2loadchecked$2typedbuffer/g'
git grep -l typedBufferLoad | xargs perl -pi -e \
's/(dx|spv)(.)typedBufferLoad/$1$2resource$2load$2typedbuffer/g'
git grep -l typedBufferStore | xargs perl -pi -e \
's/(dx|spv)(.)typedBufferStore/$1$2resource$2store$2typedbuffer/g'
git grep -l bufferUpdateCounter | xargs perl -pi -e \
's/(dx|spv)(.)bufferUpdateCounter/$1$2resource$2updatecounter/g'
git grep -l cast_handle | xargs perl -pi -e \
's/(dx|spv)(.)cast.handle/$1$2resource$2casthandle/g'
```

[wg-hlsl:0014]: https://github.com/llvm/wg-hlsl/blob/main/proposals/0014-consistent-naming-for-dx-intrinsics.md

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[DirectX] Introduce the DXILResourceAccess pass (#116726)

This pass transforms resource access via `llvm.dx.resource.getpointer`
into buffer loads and stores.

Fixes #114848.