Pelias searchProvider

[irbian]

Following this comment https://github.com/TerriaJS/terriajs/issues/5107#issuecomment-2150610334

We implemented a Pelias one based on the CesiumIon one. We just handled that we could have either of bbox or center point:

searchResults.results = response.features.map<SearchResult>((feature) => {
       
        let [longitude, latitude] = feature.geometry.coordinates;
        const MARGIN = 0.001;
        const [w, s, e, n] = feature.bbox ? feature.bbox : [longitude - MARGIN, latitude - MARGIN, longitude + MARGIN, latitude + MARGIN];
        [longitude, latitude] = feature.geometry.coordinates ? feature.geometry.coordinates : [(s + n) / 2, (e + w) / 2];
        const rectangle = Rectangle.fromDegrees(w, s, e, n);

        return new SearchResult({
          name: feature.properties.label,
          clickAction: createZoomToFunction(this, rectangle),
          location: {
            latitude: latitude,
            longitude: longitude
          }
        });
      });

We probably would need yet to handle that margin to wrap around and that it changes the norther we are, but it would be a start

This could be used to generalize CesiumIonSearch into a PeliasSearch one that by default points to Cesium, but we are interested on keeping two different geocoders and our tests didn't allow the same SearchProvider with different configs