Usage
const {getRtpEngine} = require('@jambonz/rtpengine-utils')(['10.10.0.1:2222', '10.10.02:2222']);
const obj = getRtpEngine(logger):
/*
obj is {
offer: /* bound function that calls 'offer' on least loaded rtpengine */
answer: /* ditto answer.. */
del: /* ditto delete.. */
client: /* rtpengine client that will be used for sending commands */
}
*/