Add temperatur sensor from E3DC System

Checklist

[X] I have filled out the template to the best of my ability.
[X] This only contains 1 feature request (if you have multiple feature requests, open one feature request for each feature request).
[X] This issue is not a duplicate feature request of previous feature requests.

Is your feature request related to a problem? Please describe.

I want to see when I need to heat the room in which the E3DC is standing. The external temperature is deviating from the temperature inside the E3DC System. I would like to use the internal temeratur sensor as a trigger for a heating system

Describe the solution you'd like

I would like to have a temperatur sensor, which can be seen on the webportal in the section "System Monitor".

Describe alternatives you've considered

There are no alternatives, only not to implement this

Additional context

No response

Diagnostics dump