Display on the dashboard the last refresh time of a camera

On the dashboard, when you « hover » over a camera image, display when the camera was last refreshed.

Requested by @tiboys

Big thanks Chef :wink:

In general, is it possible to display the last update date of each variable?

The ideal (in my case) would be to have a display showing the following information:


whereas with MQTT, I have a display with limited information:

After a few attempts, the time since the last received value is available for on/off elements.
The fact that this resizes the boxes with each update is not the most practical.
Also, units for voltage values (V), brightness (lux), or pressure (hPa) would be interesting.

Indeed, this is because the column width becomes too wide when the relative time changes. I have noted the bug on GitHub:

https://github.com/GladysAssistant/Gladys/issues/885

Ok, this is regarding the MQTT service. I have created a card to improve the service:

https://github.com/GladysAssistant/Gladys/issues/886