scan.go
func (s Scan) AddHosts(hosts ...string) Scan {
	s.configHosts = append(s.configHosts, hosts...)
	return s
}
func (s Scan) AddHosts(hosts ...string) Scan {
	s.configHosts = append(s.configHosts, hosts...)
	return s
}
// AddHosts adds a list of hosts to the list of hosts to be scanned