Auto merge of #24708 - szeged:webgpu-base, r=gterzian,kvark

Initial implementation of WebGPU API

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- Added the WebIDL bindings for GPU and GPUadapter interfaces.
- Created a background thread for WebGPU api calls.
- Established the async communication between the background thread and the WebGPU interfaces.
- Implemented the `requesAdapter` function of `navigator.gpu`

`./mach test-tidy` reports an error due to the different `arrayvec` version used in `servo` and `webgpu`, so added it to the ignore list in `servo-tidy.toml`

---
<!-- 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
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes addresses a part of #https://github.com/servo/servo/issues/24706

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cc @jdm, cc @kvark

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components/servo/lib.rs

@@ -49,6 +49,7 @@ pub use servo_geometry;
 pub use servo_url;
 pub use style;
 pub use style_traits;
+pub use webgpu;
 pub use webrender_api;
 pub use webrender_traits;
 pub use webvr;
@@ -863,6 +864,8 @@ fn create_constellation(
 
     let resource_sender = public_resource_threads.sender();
 
+    let webgpu = webgpu::WebGPU::new();
+
     let initial_state = InitialConstellationState {
         compositor_proxy,
         embedder_proxy,
@@ -877,6 +880,7 @@ fn create_constellation(
         webrender_document,
         webrender_api_sender,
         webgl_threads,
+        webgpu,
         webvr_chan,
         webxr_registry,
         glplayer_threads,