Letting custom entities use new more-info design

[redstone99]

It'd be nice if custom entity types could use the new more-info design so as to have more control over how entity information is displayed. At present, the default more-info card starts with history and logbook sections, followed after by a custom more-info section if the custom_ui_more_info attribute is defined on the entity. For some entity types, the history & logbook sections aren't useful. I can see two alternative ways of improving this.

1. Add a a custom_ui_new_more_info attribute that, when specified, directs the front-end to use the new design. This is probably the simplest solution.

or

2. Add a way for custom components to register custom entity types, either in the backend or frontend. At present, there are multiple attributes that a custom component can add to entities to affect front-end behavior, including custom_ui_more_info, custom_ui_state_card and icon. These are all specified per-entity, presumably increasing the size of data that the frontend has to load. Registering behavior per-entity-type rather than per-entity would presumably lower the data size, which probably is a good thing.

Thoughts?
Josh

[redstone99]

I created a PR implementing option 1: #17793