openvidu-node-client large amount of console.log calls

[skgith1]

When running openvidu-node-client under normal operation and calling forceDisconnect() the function makes entries such as Connection 'con_NFoHEAcyBn' closed every time the connection is ended. Since we have many users and call this often this can generate over 10,000 console.log() lines every day. It would be nice if this could be muted. Thank you.

[pabloFuente]

We will add a method similar to OpenVidu.enableProdMode of openvidu-browser SDK to disable all logs except error/warn level.

[skgith1]

@pabloFuente Excellent Thank you!