Add tshark packet analysis support

[Dhineshkumar272005]

Description

Adds TShark (Wireshark's CLI) as a new tool to the MCP Kali Server, enabling network packet capture and traffic analysis directly through the MCP agent.

Changes

• server.py: Added /api/tools/tshark API endpoint
• client.py: Added tshark_capture MCP tool registration

Supported Parameters

Parameter	TShark Flag	Description
interface	-i	Network interface to capture on (e.g., eth0, wlan0)
capture_filter	-f	BPF capture filter (e.g., "tcp port 80")
display_filter	-Y	Wireshark display filter (e.g., "http.request")
packet_count	-c	Number of packets to capture before stopping
duration	-a duration:N	Capture duration in seconds
read_file	-r	Read and analyze an existing pcap file
output_fields	-T fields -e	Comma-separated field extraction
additional_args	—	Any extra TShark arguments

Use Cases

• Live packet capture on a specific interface
• Analyzing existing .pcap files from other tools
• Filtering traffic by protocol, port, or IP
• Extracting specific fields for structured output

Testing

Follows the same endpoint pattern and error handling as all existing tools (nmap, gobuster, nikto, etc.).