Enable Storage Texture Binding Arrays on DX12 (gfx-rs#6956)

Author: cwfitzgerald

wgpu-hal/src/dx12/adapter.rs

@@ -339,6 +339,7 @@ impl super::Adapter {
 
         features.set(
             wgt::Features::TEXTURE_BINDING_ARRAY
+                | wgt::Features::STORAGE_RESOURCE_BINDING_ARRAY
                 | wgt::Features::UNIFORM_BUFFER_AND_STORAGE_TEXTURE_ARRAY_NON_UNIFORM_INDEXING
                 | wgt::Features::SAMPLED_TEXTURE_AND_STORAGE_BUFFER_ARRAY_NON_UNIFORM_INDEXING,
             shader_model >= naga::back::hlsl::ShaderModel::V5_1,