script: Move code generation and webidl files to new script_bindings crate. (#35157)

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

components/script_bindings/webidls/Worker.webidl

@@ -0,0 +1,31 @@
+/* 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://html.spec.whatwg.org/multipage/#abstractworker
+[Exposed=(Window,Worker)]
+interface mixin AbstractWorker {
+    attribute EventHandler onerror;
+};
+
+// https://html.spec.whatwg.org/multipage/#worker
+[Exposed=(Window,Worker)]
+interface Worker : EventTarget {
+  [Throws] constructor(USVString scriptURL, optional WorkerOptions options = {});
+  undefined terminate();
+
+  [Throws] undefined postMessage(any message, sequence<object> transfer);
+  [Throws] undefined postMessage(any message, optional StructuredSerializeOptions options = {});
+  attribute EventHandler onmessage;
+  attribute EventHandler onmessageerror;
+};
+
+dictionary WorkerOptions {
+  WorkerType type = "classic";
+  RequestCredentials credentials = "same-origin"; // credentials is only used if type is "module"
+  DOMString name = "";
+};
+
+enum WorkerType { "classic", "module" };
+
+Worker includes AbstractWorker;