add (config): add costway FD10584DE-WH config (#4815)
* add (config): add costway FD10584DE-WH config
* fix (pytest): fix the PR test failure
* feat (costway_fd10584dewh_heatpump): naming tweaks
- filename: follow brand_model_type convention
- device name: keep it short to avoid cluttering the default UI if it is not changed by the user
PR #4815
---------
Co-authored-by: Jason Rumney <make-all@users.noreply.github.com>