json2pcap: Added pcap masking and anonymization support
The script includes the following changes:
- Added pcap masking and anonymization support
 - Support to mask/anonymize only portion of field
 - Added reading from stdin
 - Changed json to ijson library to support large files
 - Migrated from text2pcap to scapy for pcap generation
 - Added version to script
 
Wireshark commit: https://gitlab.com/wireshark/wireshark/-/commit/9b5f07d8295d1857d2039f6b868e1848ec13bc60