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/ReadableStreamBYOBReader.webidl

@@ -0,0 +1,19 @@
+/* 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://streams.spec.whatwg.org/#byob-reader-class-definition
+
+[Exposed=*]
+interface ReadableStreamBYOBReader {
+  [Throws]
+  constructor(ReadableStream stream);
+
+  [NewObject]
+  Promise<ReadableStreamReadResult> read(ArrayBufferView view);
+
+  [Throws]
+  undefined releaseLock();
+};
+ReadableStreamBYOBReader includes ReadableStreamGenericReader;
+