* Implement Elmax cover platform.
* Reduce the number of code lines by leveraging the := operator
* Move _COMMAND_BY_MOTION_STATUS declaration at the top
* Remove redundant null-check
* Move conditional platform setup logic into the platform itself
* Remove redundant log
* Change log severity for stop request on IDLE cover state
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Co-authored-by: G Johansson <goran.johansson@shiftit.se>