Add interface for irradiance timeseries skydome data

[FlorianK13]

We want to integrate the possibility to receive irradiance data timeseries. In there we could receive the sum of direct and diffuse radiance coming from a given sky segment at a given point in time.

The data format should look like this.

SkyDomeTimeSeries: {
    data: {
        altitude: [] number;  
        azimuth: [] number;
        directRadiance: [] number; 
        diffuseRadiance: [] number; 
    }[];  //a timeseries of sky domes at a given poin in time (1h resolution or 15min resolution)
    metadata: {
        description: string;
        latitude: number;
        longitude: number;
        samplesAzimuth: number;
        samplesAltitude: number;
        lengthTimeseries: number;
    };
}

[FlorianK13]

This is what we mean when talking about a skydome: