feat(pcap): clear connections and clients after PcapNostaleManager is closed

fix(pcap): handle exceptions inside of packet arrival

feat(pcap): add options, replace magic numbers with options

feat(pcap): pass in longer packets correctly

Merge pull request #74 from Rutherther/feat/pcap

Add support for pcap client

feat(pcap): add mechanism to remove sniffed packets and remove hanging connections

feat(pcap): add pcap client support