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/HTMLProgressElement.webidl

@@ -0,0 +1,16 @@
+/* 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/#htmlprogresselement
+[Exposed=Window]
+interface HTMLProgressElement : HTMLElement {
+  [HTMLConstructor] constructor();
+
+  [CEReactions]
+           attribute double value;
+  [CEReactions]
+           attribute double max;
+  readonly attribute double position;
+  readonly attribute NodeList labels;
+};