Add Corsair Commander DUO captures

[ndizazzo]

Summary

Add Corsair Commander DUO USBPcap captures and helper analyzers used while developing liquidctl support for the device.

Contents

• Adds a new Corsair Commander DUO/ device directory.
• Includes 26 renamed captures grouped into initial hardware-mode captures, Device Memory preview/apply captures, and focused Device Memory commit/readback captures.
• Adds Python analyzer scripts for summarizing HID endpoint writes and extracting HID packet CSVs from USBPcap captures.

Notes

• Captures cover software/live lighting previews, Device Memory fixed/off/rainbow commits, fan/cooling preset traffic, startup, and readback behavior.
• Focused readback confirms Commander DUO Device Memory fixed-color payload order ff bb gg rr on endpoint 65 6d.
• The analyzer scripts require tshark and read HID payloads from usbhid.data.

Verification

• Organized files according to existing Corsair device directory conventions in this repository.
• Renamed capture files consistently as commander-duo-NN-<scenario>.pcap.
• Ran duo_hid_summary.py on the focused readback capture and confirmed it reports the expected 65 6d / 7e 20 payload.
• Ran duo_extract_hid_csv.py on the same capture for host/device HID endpoints.
• Ran Python syntax checks for both analyzer scripts.

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