refactor: object wrap WebGPU (#27665)

Fixes #25874
Fixes #26760
Fixes #24288
Fixes #24798
Fixes #25627
Fixes #25915
Fixes #26769

ext/webgpu/command_buffer.rs

@@ -0,0 +1,52 @@
+// Copyright 2018-2025 the Deno authors. MIT license.
+
+use std::cell::OnceCell;
+
+use deno_core::op2;
+use deno_core::GarbageCollected;
+use deno_core::WebIDL;
+
+use crate::Instance;
+
+pub struct GPUCommandBuffer {
+  pub instance: Instance,
+  pub id: wgpu_core::id::CommandBufferId,
+  pub label: String,
+
+  pub consumed: OnceCell<()>,
+}
+
+impl Drop for GPUCommandBuffer {
+  fn drop(&mut self) {
+    if self.consumed.get().is_none() {
+      self.instance.command_buffer_drop(self.id);
+    }
+  }
+}
+
+impl deno_core::webidl::WebIdlInterfaceConverter for GPUCommandBuffer {
+  const NAME: &'static str = "GPUCommandBuffer";
+}
+
+impl GarbageCollected for GPUCommandBuffer {}
+
+#[op2]
+impl GPUCommandBuffer {
+  #[getter]
+  #[string]
+  fn label(&self) -> String {
+    self.label.clone()
+  }
+  #[setter]
+  #[string]
+  fn label(&self, #[webidl] _label: String) {
+    // TODO(@crowlKats): no-op, needs wpgu to implement changing the label
+  }
+}
+
+#[derive(WebIDL)]
+#[webidl(dictionary)]
+pub(crate) struct GPUCommandBufferDescriptor {
+  #[webidl(default = String::new())]
+  pub label: String,
+}