Use entity attributes in mystrom (#93591)
* Migrated proprties to _attr_
* Update homeassistant/components/mystrom/light.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* Update homeassistant/components/mystrom/light.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* Update homeassistant/components/mystrom/light.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* Update homeassistant/components/mystrom/light.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* Update homeassistant/components/mystrom/light.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* Update homeassistant/components/mystrom/light.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* Update homeassistant/components/mystrom/switch.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* Update homeassistant/components/mystrom/switch.py
Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>
* review comment
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Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>