Ewelink api next

[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 (french forum/english forum) 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

Changes eWeLink API with OAuth2 authentication.

Documentation: GladysAssistant/v4-website#232

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (621c0c5) 98.19% compared to head (e69876d) 98.24%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1961      +/-   ##
==========================================
+ Coverage   98.19%   98.24%   +0.05%     
==========================================
  Files         787      800      +13     
  Lines       12293    12416     +123     
==========================================
+ Hits        12071    12198     +127     
+ Misses        222      218       -4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[atrovato]

Changed for #1977