Support for ClimateGuard Radiation sensor

[ezhick]

Please add support for ClimateGuard Radiation sensor

https://climateguard.info/radsens/

It's integrated in beta of Luftdaten since last March.

Here is the json for it:

{"software_version": "NRZ-2020-134-B1-airomsk2custom", "age":"93", "sensordatavalues":[{"value_type":"SDS_P1","value":"20.17"},{"value_type":"SDS_P2","value":"9.93"},{"value_type":"BME280_temperature","value":"-7.99"},{"value_type":"BME280_pressure","value":"99043.78"},{"value_type":"BME280_humidity","value":"78.89"},{"value_type":"samples","value":"4952196"},{"value_type":"min_micro","value":"28"},{"value_type":"max_micro","value":"20513"},{"value_type":"interval","value":"145000"},{"value_type":"signal","value":"-86"},{"value_type":"RadSens_radiation_static","value":"10.20"}]}