fix(license): add license header and props to y-websocket

Signed-off-by: Max <[email protected]>

src/services/y-websocket.js

@@ -1,5 +1,11 @@
 /**
- * @module provider/websocket
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+/**
+ * Based on the awesome y-websocket https://github.com/yjs/y-websocket/
+ * Modified to match the needs of an http transport.
  */
 
 /* eslint-env browser */