Auto merge of #25677 - szeged:wgpu_shader_module, r=jdm

Initial implementation of GPUShaderModule

Added WebIDL bindings for `GPUShaderModule`.
Implemented the `createShaderModule` function of `GPUDevice`.

<!-- Please describe your changes on the following line: -->

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes addresses a part of #24706

<!-- Either: -->

cc @kvark @jdm @zakorgy
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

components/script/dom/webidls/GPUDevice.webidl

@@ -19,8 +19,8 @@ interface GPUDevice : EventTarget {
     GPUPipelineLayout createPipelineLayout(GPUPipelineLayoutDescriptor descriptor);
     GPUBindGroup createBindGroup(GPUBindGroupDescriptor descriptor);
 
-    /*GPUShaderModule createShaderModule(GPUShaderModuleDescriptor descriptor);
-    GPUComputePipeline createComputePipeline(GPUComputePipelineDescriptor descriptor);
+    GPUShaderModule createShaderModule(GPUShaderModuleDescriptor descriptor);
+    /*GPUComputePipeline createComputePipeline(GPUComputePipelineDescriptor descriptor);
     GPURenderPipeline createRenderPipeline(GPURenderPipelineDescriptor descriptor);
 
     GPUCommandEncoder createCommandEncoder(optional GPUCommandEncoderDescriptor descriptor = {});

components/script/dom/webidls/GPUShaderModule.webidl

@@ -0,0 +1,15 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+// https://gpuweb.github.io/gpuweb/#gpushadermodule
+[Exposed=(Window, DedicatedWorker), Serializable, Pref="dom.webgpu.enabled"]
+interface GPUShaderModule {
+};
+GPUShaderModule includes GPUObjectBase;
+
+typedef (Uint32Array or DOMString) GPUShaderCode;
+
+dictionary GPUShaderModuleDescriptor : GPUObjectDescriptorBase {
+    required GPUShaderCode code;
+};