Expand entity type range.

[Spamfast]

Checklist

• [X ] I am running the latest version of the card - v2.0.4
• [X ] I checked if there isn't another feature request opened with the same request
• [X ] I checked that the feature is not already available in the dev branch

Is your feature request related to a problem? Please describe. Yes, I believe. I could have sworn that I used to be able to use a switch entity with a suitable transform: "return x === 'on' ? 1 : 0;" to show a switch on the graph but now it always displays as N/A in the states legend and doesn't show up on the plot.

Describe the solution you'd like Can we please use arbitrary entity types provided they have a 'state' property so we don't have to create template sensor/binary_sensor entities for the sole purpose of graphing?

Describe alternatives you've considered I'm using a template binary sensor now which works but is not very elegant as it loads the HA server unnecessarily even when I'm not viewing the graph.

Additional context Nothing to declare.

[RomRider]

Did you disable history for this entity or the whole switch domain? That would be the only reason that I can think of.

[Spamfast]

At one point I think I did. I'll close this.