Sankey chart for Energy dashboard

[MindFreeze]

Proposed change

Looks the same as the custom card.
A base sankey chart component and an energy-sankey card for the dashboard.
Vertical mode is not ready yet. It will probably be the only user option.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[silamon]

There was a community contribution some months ago with this outcome.

[Madelena]

There was a community contribution some months ago with this outcome.

The difference here is that this is the plan that that comment is talking about. 😉

[silamon]

There was a community contribution some months ago with this outcome.

The difference here is that this is the plan that that comment is talking about. 😉

That's great to know. 👍 From a community side we don't have this information.