Home connect

[DavidMStraub]

Hi @frenck, thanks for merging my PR #11336! However since it is already a couple of months old, I realized that a few minor things that were changed during the PR discussion in the Core repo need to be changed:

• The integration was renamed to homeconnect to home_connect
• The attributes of the power switch have been removed
• The elapsed time sensor has been removed
• The remaining time sensor has been converted to a timestamp sensor.

This PR reflects these changes in the docs.

[frenck]

Thanks, @DavidMStraub 👍

[probot-home-assistant]

It seems that this PR is targeted against an incorrect branch. Documentation updates which apply to our current stable release should target the current branch. Please change the target branch of this PR to current and rebase if needed. If this is documentation for a new feature, please add a link to that PR in your description.
_{^{(message by DocsTargetBranch)}}