Can't edit sensor entity in UI, due to missing unique_id.

[rugaard]

It's currently not possible to edit the sensor in the UI, which means it's not possible to ie. place it in an area (which I would love to do).

To enable the UI for editing of entities, the entities requires an unique_id. According to the "legacy format" for making custom sensors, it should possible to add one at the same level as friendly_name.

Is this something that can be added as a configuration option along with friendly_name?