add global state_color: option and set it to true by default

[Mariusthvdb]

as has been touched in https://community.home-assistant.io/t/2022-12-color-states-are-broken-unusable/499890/447

after all changes in color scheme in 2022.12, the state_color: true is still required to see those changes. Before, we only used this for some domains, switch, boolean, device_tracker come to mind. because of the more limited use, the explicit line was needed in less cards then currently.

and yet, even before 2022.12 my Yaml config already contained over 120 occurrences of that line (and that is excluding the ones I could prevent using yaml anchors.)

Long story short, my suggestion would be to create a global setting for state_color:, and default that to true. Ofc. as ever, allow users to override on a card, or even entity level to set it to false.

Hence not breaking peoples Frontends, and allowing the ease of customizations on every possible level in the config.

It would help novices to see the expected color schematics, and allow existing users to delete all of those lines. The odd case where state_color: false would be required doesnt come to mind yet, but in the event someone might want to do so, this would still be very easy to do.

thanks for considering