sniff.py, sniffer.py, impacket-{sniff, sniffer}: add page (#15945)

pages/common/impacket-sniff.md

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+# impacket-sniff
+
+> This command is an alias of `sniff.py`.
+> Part of the Impacket suite.
+> More information: <https://github.com/fortra/impacket>.
+
+- View documentation for the original command:
+
+`tldr sniff.py`

pages/common/impacket-sniffer.md

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+# impacket-sniffer
+
+> This command is an alias of `sniffer.py`.
+> Part of the Impacket suite.
+> More information: <https://github.com/fortra/impacket>.
+
+- View documentation for the original command:
+
+`tldr sniffer.py`

pages/common/sniff.py.md

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+# sniff.py
+
+> Capture and display network packets using the pcapy library.
+> Part of the Impacket suite.
+> More information: <https://github.com/fortra/impacket>.
+
+- List available network interfaces and select one to start capturing packets (requires `sudo`):
+
+`sudo sniff.py`
+
+- Capture packets and save output to a file while displaying it on the terminal:
+
+`sudo sniff.py | sudo tee {{output_file}}`

pages/common/sniffer.py.md

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+# sniffer.py
+
+> Capture and display network packets for specified protocols using raw sockets.
+> Part of the Impacket suite.
+> More information: <https://github.com/fortra/impacket>.
+
+- Capture packets for default protocols (ICMP, TCP, UDP):
+
+`sniffer.py`
+
+- Capture packets for specific protocols (e.g., ICMP, TCP):
+
+`sniffer.py {{protocol1}} {{protocol2}}`
+
+- Capture packets for specific protocols (e.g., TCP):
+
+`sniffer.py tcp`