Combine Danfoss 014G0013 thermostat and other temperature sensor to show current temperature

Feature Requests
1

Danfoss 014G0013 (LC-13) thermostats don’t have temperature sensor that reports current temperature to the HA. Combine thermostat with other temperature sensor will show target temperature and current temperature in one entity.
I try:

customize:
  climate.014g0013_thermostat_heating_1_7_1:
    current_temperature: '{{ states.sensor.temperature_158d0001100416.state }}'

but it don’t work because customize doesn’t support template. It has to be added in HA.

2

Would be a really great solution.
Anyone up for some code writing?

3

This will be great homebridge will work fine with this solution