Show group helpers' individual entities controls in the frontend

[DerangedWifi]

Display the controls/state of individual entities within a group under the group's info ui

When showing any group that contains multiple entities, such as lights, locks, switches, binary sensors, etc, show each individual entity under the group's info ui as a collapsible card, much like how the current automation builder works.

Here's a rough markup I made on my phone. Could design something nicer looking later when on my pc.

This only makes it easier to understand what's going on in one place. With the additional option for device specific control within a group's existing UI, it makes sense to replace the currently empty unused space in favor of an easy to read, group entity summary/control stack of collapsible cards.

Look at how Google home handles this - with some markup, that is.

Or even how it's been set up in my own Lovelace dash - the group controller for inputs meant to be sent to all devices in the group, with individual devices of the group listed below with control for each specifically.

What do you think?

[Wesley-Vos]

+1 for this feature request!

It would be really helpful if the states of the entities of a group (created by the helper UI) are shown in the more-info pop-up. It makes it easier to control the individual entities.

Imagine you have a light group with all lights from the living room which you almost always switch together. However, at some moment in time, you want to turn a specific light on or of. In stead of having cards for all lights on your dashboard or search for the individual light, it is way easier to open the more-info pop-up of the group (for example with a double tap action on the living room light button card) and turn the specific light on or off.

Hope it makes sense! Furthermore, I still have the idea that this was always the case for the old, YAML-generated groups, but not sure.

[dolfelt]

I have begun attempting to implement this feature. I will let you know when I have something to show for it @DerangedWifi and @Wesley-Vos

[dolfelt]

Initial PR (#25687) has been submitted with some screenshots.