Refactor device form

[atrovato]

Pull Request check-list

To ensure your Pull Request can be accepted as fast as possible, make sure to review and check all of these items:

• [ ] If your changes affects code, did your write the tests?
• [ ] Are tests passing? (npm test on both front/server)
• [ ] Is the linter passing? (npm run eslint on both front/server)
• [ ] Did you run prettier? (npm run prettier on both front/server)
• [ ] If you are adding a new features/services, did you run integration comparator? (npm run compare-translations on front)
• [ ] Did you test this pull request in real life? With real devices? If this development is a big feature or a new service, we recommend that you provide a Docker image to the community for testing before merging.
• [ ] If your changes modify the API (REST or Node.js), did you modify the API documentation? (Documentation is based on comments in code)
• [ ] If you are adding a new features/services which needs explanation, did you modify the user documentation? See the GitHub repo and the website.
• [ ] Did you add fake requests data for the demo mode (front/src/config/demo.js) so that the demo website is working without a backend? (if needed) See https://demo.gladysassistant.com.

NOTE: these things are not required to open a PR and can be done afterwards / while the PR is open.

Description of change

Please provide a description of the change here. It's always best with screenshots, so don't hesitate to add some!

[codecov[bot]]

Codecov Report

Merging #25 (dc5f6a4) into refactor-device-room-selector (3a611a8) will not change coverage. The diff coverage is n/a.

:exclamation: Current head dc5f6a4 differs from pull request most recent head 7891e06. Consider uploading reports for the commit 7891e06 to get more accurate results

@@                      Coverage Diff                       @@
##           refactor-device-room-selector      #25   +/-   ##
==============================================================
  Coverage                          96.54%   96.54%           
==============================================================
  Files                                613      613           
  Lines                               8729     8729           
==============================================================
  Hits                                8427     8427           
  Misses                               302      302           

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