* added italian translation
* feat: updated translation/it.json
* feat: add missing key in Italian translation
* feat: fix missing key in Italian translation
* feat: add state_class for sensor
* feat: add optional state_class and unit_of_measurement for properties
* feat:add support for state_class and unit process
* style: fix pylint format
* style: fix pylint format
* sytle: change logic to suit conversation
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Co-authored-by: LiShuzhen <SusanPhevos@gmail.com>
* fix: lumi.switch.acn040 identify service translation of zh-Hans
* fix: remove useless part
* fix: lumi.switch.acn040 identify service translation of en