move port option to opts variable in `new Client()`

[feross]

port doesn't apply for a WebTorrent (ws) tracker.

/**
 * BitTorrent tracker client.
 *
 * Find torrent peers, to help a torrent client participate in a torrent swarm.
 *
 * @param {string|Buffer} peerId         peer id
 * @param {Number} port                  torrent client listening port
 * @param {Object} torrent               parsed torrent
 * @param {Object} opts                  options object
 * @param {Number} opts.rtcConfig        RTCPeerConnection configuration object
 * @param {Number} opts.wrtc             custom webrtc implementation
 * @param {Object} opts.getAnnounceOpts  callback to provide data to tracker
 */
function Client (peerId, port, torrent, opts) {

[feross]

I'm working on this.

[feross]

8.0.0