function generateId() {
    var bytes = [];
    for (var i=0;i<8;i++) {
        bytes.push(Math.round(0xff*Math.random()).toString(16).padStart(2,'0'));
    }
    return bytes.join("");
}
Generates a pseudo-unique-random id.
@return {String} a random-ish id
@memberof @node-red/util_util