Add ecobee humidifier

[treylok]

Proposed change

Document ability to set the humidifier mode of an ecobee thermostat with a humidifier attached.

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logo's and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: Add Ecobee humidifier core#45003
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue:

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

[probot-home-assistant]

It seems that this PR is targeted against an incorrect branch since it has a parent PR on one of our codebases. Documentation that needs to be updated for an upcoming release should target the next branch. Please change the target branch of this PR to next and rebase if needed.
_{^{(message by DocsTargetBranch)}}

[frenck]

This PR needs to be targeting the next branch, as it relies on a code change in the Home Assistant code base (and thus a next release).

Please change the target of this PR to the next branch and git rebase the PR if needed.

Thanks 👍

[frenck]

There are unrelated commits in this PR, you still need to rebase it onto the next branch @treylok 👍

[treylok]

Sorry, not sure what I did. Hopefully this is correct.

[frenck]

Yeah, that did the trick @treylok 👍

2 small suggestions and the docs are ready to go 👍

[frenck]

✅ Approved. Can be merged as soon as the parent PR gets merged.

[MartinHjelmare]

Let's just update the ha_category and ha_platforms front matter.

[MartinHjelmare]

Thanks!