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/UIEvent.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://w3c.github.io/uievents/#interface-uievent
+[Exposed=Window]
+interface UIEvent : Event {
+  [Throws] constructor(DOMString type, optional UIEventInit eventInitDict = {});
+  //  readonly    attribute WindowProxy? view;
+  readonly attribute Window? view;
+    readonly    attribute long         detail;
+};
+
+// https://w3c.github.io/uievents/#dictdef-uieventinit-uieventinit
+dictionary UIEventInit : EventInit {
+  //  WindowProxy? view = null;
+  Window? view = null;
+    long         detail = 0;
+};
+
+// https://w3c.github.io/uievents/#idl-interface-UIEvent-initializers
+partial interface UIEvent {
+    // Deprecated in DOM Level 3
+    undefined initUIEvent (
+      DOMString typeArg,
+      boolean bubblesArg,
+      boolean cancelableArg,
+      Window? viewArg,
+      long detailArg
+    );
+};