updated extension matching to accept .pcap*

[meme-lord]

If you run tcpdump with two constraints (eg every 30 seconds and max size 2mb) it will create files with the extension pcap1, pcap2 etc. tcpdump man page

-rw-r--r--  1 root     root     226K Aug 26 12:07 wlan0-23-08-26_12.06.59.pcap
-rw-r--r--  1 root     root     2.0M Aug 26 12:07 wlan0-23-08-26_12.07.29.pcap
-rw-r--r--  1 root     root     2.0M Aug 26 12:07 wlan0-23-08-26_12.07.29.pcap1
-rw-r--r--  1 root     root     1.1M Aug 26 12:07 wlan0-23-08-26_12.07.29.pcap2
-rw-r--r--  1 root     root     2.0M Aug 26 12:08 wlan0-23-08-26_12.07.59.pcap

Tulip wont ingest these files as it only accepts .pcap and .pcapng. This change fixes that. Now it will accept any file with an extension starting with pcap.

[Sijisu]

Looks good, thank you for contributing to Tulip!