Allow default secondary_info for entities card for all entities

[dshokouhi]

The request

A lot of the time when I add entities I want secondary_info: last-changed however if I have like 20-30 entities in one card it can take some time to set them up or even convert them. Just a tiny thing thats all.

The alternatives

Just to add secondary info to each and every entity

Additional information

Just to make life easier, some may have an automation card with only automations and want to show last-triggered. Can be a few more use cases for this too.

[rodpayne]

I am also interested in this feature, but does this pull request only address Hui Entities Card?

[iantrich]

@rodpayne Yes. I can't think of anywhere else it would be relevant

[Mariusthvdb]

bump....
I figured WTH, why not ;-) https://community.home-assistant.io/t/wth-why-is-there-still-no-card-global-secondary-info-last-changed/478374/4