版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/kurento-client/6.18.0/js/kurento-client.js
- https://cdn.bootcdn.net/ajax/libs/kurento-client/6.18.0/js/kurento-client.map
- https://cdn.bootcdn.net/ajax/libs/kurento-client/6.18.0/js/kurento-client.min.js