Reverse limitlessled color_temp range

[amelchio]

Description:

I do not have this hardware but the limitlessled range apparently goes from 0.0 (warm) to 1.0 (cold).

This is a somewhat breaking change because existing color_temp configurations will have to be changed (into 500-old_value).

Related issue (if applicable): fixes #7333

Notice for release notes: The LimitlessLED color temperatures have been turned around to work like other lights. To maintain previous colors you must adjust the color_temp value in your light.turn_on calls to 654 minus your old value (for example, 280 becomes 374).

Checklist:

If the code communicates with devices, web services, or third-party tools:

• Local tests with tox run successfully.

[mention-bot]

@amelchio, thanks for your PR! By analyzing the history of the files in this pull request, we identified @happyleavesaoc, @fabaff and @Azelphur to be potential reviewers.

[amelchio]

It appears that this is better, but still wrong.

I found some documentation and it suggests that the valid range is 2700K-6500K.

So the conversion could be further improved if #7206 is merged.

[balloob]

You're the color temperature master, so merge when you think it's ok.

Could you add a 1 line description to the PR description about the breaking change for the release notes ?

[amelchio]

@happyleavesaoc What do you think of this change?

[happyleavesaoc]

@amelchio This should work.