Improve Yeelight support (expose more properties, add support for sec…

…ondary lights) (#1035)

* Add all yeelight properties from documentation

* Add new property to DummyLight init

* Cast delay_off to int

* Replase data with a dictionary

* add YeelightSubLight class

* Using __repr__ to fix cl output, fix tests.

* return params for base lamp to YeelightStatus

* Improve comand line output
 - YeelightSubLight was inherited from the DeviceStatus
 - added cli_format_lights property

* use cli_format function for output

* Show color mode name

* Added more devices and properties to test

* Add common tests

* SIM119 was added to flake8 Ignore

.flake8

@@ -7,4 +7,5 @@ max-line-length = 88
 select = C,E,F,W,B,SIM,T
 # the line lengths are enforced by black and docformatter
 # therefore we ignore E501 and B950 here
-ignore = E501,B950,W503,E203
+# SIM119 - are irrelevant as we still support python 3.6 series
+ignore = E501,B950,W503,E203,SIM119