yeelight: use and expose the color temp range from specs

[Kirmas]

This PR is next stage to integrate spec file. For more information look to #1094

@rytilahti I decided that it would be easier to go function by function and at the end try to add support for background lighting. It's slower, but honestly I don't see any other way to move at least somehow.

Also fix the incorrect parameters while testing on my device.

[codecov-commenter]

Codecov Report

Merging #1247 (8977a18) into master (0903990) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1247   +/-   ##
=======================================
  Coverage   79.20%   79.21%           
=======================================
  Files          90       90           
  Lines        9696     9710   +14     
  Branches     1130     1131    +1     
=======================================
+ Hits         7680     7692   +12     
- Misses       1824     1826    +2     
  Partials      192      192           

Impacted Files	Coverage Δ
miio/integrations/yeelight/__init__.py	87.22% <100.00%> (-0.56%)	⬇️
miio/integrations/yeelight/tests/test_yeelight.py	96.59% <100.00%> (+0.11%)	⬆️

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[Kirmas]

#1247 (comment) Can anyone tell me why the coverage is less than before? I really do not understand.

[rytilahti]

Perhaps this PR should also include the getter for the valid range? I'm unsure about naming, but maybe something like this?

@property
def valid_temperature_range() -> ColorTempRange:
    passs

[rytilahti]

Thanks @Kirmas 👍

[Kirmas]

Thanks @Kirmas 👍
@rytilahti Are you waiting for something additional from me in this PR? Or isn't time to merge? If second ok. But if first tell me.

[rytilahti]

Ah, sorry, I got distracted with some other things and forgot to merge it. I think I was about to answer to your question regarding to how to do multiple lights without modifying the yeelight constructor. I'd say the simplest solution would be creating a separate class that handles the light-specific wrappings (e.g., using the prefix for the secondary light while just using the "parent" yeelight for communications).

So in case you just use Yeelight, you would always be controlling the main light. The other lights are exposed for example using a separate properties background_light etc.