Add support for Zemismart ZM25EL roller shade (#5675)
* feat(zemismart_roller_shade_zm25el): add new device configuration for Zemismart roller shade
* feat(zemismart_roller_shade_zm25el): add class measurement to sensor entity
* Updated available entites, and added closed/open state
* Removed unavailable sensors
* Removed last of unavailable states
* Missed one
* Remove derived "state" binary sensor
- derived entities can be added using template helpers by users who want them.
- the name "state" has specific meaning in HA so is best avoided.
* Rename zemismart_roller_shade_zm25el.yaml to zemismart_zm25el_rollershade.yaml
Follow naming convention of brand_model_devicetype
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Co-authored-by: Jason Rumney <make-all@users.noreply.github.com>