- add the KL400L5 color temperature range used by newer firmware
- add a KL400L5(US) 1.0.11 fixture that reports variable color
temperature support
- categorize that fixture as variable color temperature while keeping
older KL400L5 fixtures non-variable
- The Tapo app exposes 2500K-9000K for these KL400L5 strips, so this PR
uses that app-visible range.
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>