Add option to set precision to group sensors of type sensor

Feature Requests
1

I wanted two temperature sensors to be combined to get a median value.
Maybe it is my bad habbit, but in most of these situations, I create a template sensor for this.

Then I thought it might be more efficient to use a pre-defined integration like min/max sensor, because the hard work is not done by jNinja?. So i looked how to do this. it seems the min/max sensor is kind of replaced by the statistic sensor? Oh wait it seems now available as group sensor!

All implementations however support some sort of setting precision, because the calculated result might have many decimals. However, the group sensor does not have a precision setting for the sensor type. I would suggest to add that!

2

I just wanted to open a new topic, but I found this one and totally agree with it.
I use group to average temperature sensors (type: mean).
If there are three sensors, then I often see something like 23,4333333333333 °C
It’s very inconvenient.
Thank you for understanding and help.