wendy5667

feat(websocket): add support for reason in WebSocket.close()

3

# Summary of Changes This PR adds `reason` to Websocket.close() as specified in version 2.3 of the [HTTP & WebSocket ASGI Message Format](https://asgi.readthedocs.io/en/latest/specs/www.html#http-websocket-asgi-message-format). Closure due to [`HTTPError`](https://falcon.readthedocs.io/en/stable/api/errors.html#falcon.HTTPError)s are rendered automatically...