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/AudioScheduledSourceNode.webidl

@@ -0,0 +1,14 @@
+/* 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/. */
+/*
+ * The origin of this IDL file is
+ * https://webaudio.github.io/web-audio-api/#AudioScheduledSourceNode
+ */
+
+[Exposed=Window]
+interface AudioScheduledSourceNode : AudioNode {
+  attribute EventHandler onended;
+  [Throws] undefined start(optional double when = 0);
+  [Throws] undefined stop(optional double when = 0);
+};