Nordic air quality: domain library

Domain library that defines shared domain data structures.

Usage

```rust use naq_domain::SensorData;

fn main() { let sensordata = SensorData { co2: 533.0, voc: 72.0, relativeatmosphericpressure: 1005.92, relativehumiditypercent: 36.5, temperaturecelsius: 20.42, radonshortterm: Some(1), radonlongterm: Some(1), };

println!("{:#?}", sensor_data);

} Result text SensorData { relativehumiditypercent: 36.5, radonshortterm: Some( 1, ), radonlongterm: Some( 1, ), temperaturecelsius: 20.42, relativeatmospheric_pressure: 1005.92, co2: 533.0, voc: 72.0, } ```