Add local calibration for HM-CC-RT-DN (Homematic)

[Wonko52]

The calibration type "offset based" is not available for HM-CC-RT-DN from Homematic.

It can be set via a service in Home Assistant in the range -3.5 to +3.5:

service: homematicip_local.put_paramset
data:
  paramset_key: MASTER
  paramset:
    TEMPERATURE_OFFSET: 2
  device_id: <Device ID>

The following applies for Temperature Offset:
0: -3.5 °C
...
5: -1 ° C
6: -0.5 °C
7: 0 °C
8: 0.5 °C
9: 1 °C
...
14: 3.5 °C