Update the FHI AngularHighcharts API

[proand]

NB! Check #11 for more info!

Acceptance Criteria

1. Go to https://dev-designsystem.fhi.no/developer/components/highcharts
2. Check that all diagrams works as before. There should be no changes at all!
3. Go to API doc
4. Check that the interface is same as the one below, that the docomuentation make sense and that all deprecated properties are still there, but marked for deprecation in later version

API interface (expanded)

export interface FhiDiagramOptions {
  activeDiagramType: FhiDiagramTypeIds;
  controls?: {
    fullScreenButton?: {
      show?: boolean;
    };
    metadataButton?: {
      show?: boolean;
    };
    navigation?: {
      items?: {
        chartTypes?: Array<keyof typeof ChartTypeIds>;
        mapTypes?: Array<keyof typeof MapTypeIds>;
      };
      show?: boolean;
      type?: keyof typeof DiagramTypeNavIds;
    };
    tableOrientationButton?: {
      show?: boolean;
    };
  };
  footer?: {
    credits?: {
      href: string;
      text: string;
    };
    disclaimer?: string;
    flags?: Array<FhiDiagramFlag>;
    lastUpdated?: string;
  };
  openSource?: boolean;
  series: {
    data: {
      name: string;
      y: number | string;
    };
    name: string | Array<string>;
    unitId?: number | string;
  };
  tableOrientation?: FhiTableOrientations;
  title: string;
  unit?: [
    {
      id: number | string;
      decimals: number;
      label: string;
      symbol: string;
      position: keyof typeof UnitSymbolPosition;
    },
  ];
}