extended ICMP packet dumping to parts after packet creation

extended ICMP packet dumping to parts after packet creation

in detail:
* in IcmpPinger::handle_receive_icmp_packet, may get exceptions from boost assertions
  in to_string and print and match_xy functions --> put into a try-catch
* created a dump_packet(packet) and moved dump_packet functions into IcmpPacketFactory
* to dump an IcmpPacket, need to also dump its IP header --> created IpHeader::write
* for this moved the Payload variable from Ipv4/6Header to IpHeader super class
* during testing in feed_packet_data, add skipped byte size to log output