feat(google-maps): Add support for SuperClusterAlgorithm customized options from @googlemaps/markerclusterer

[xbit18]

Feature Description

Hello, I hope this is useful to someone:
I recently started using the angular-google-maps library to draw a Google Map with about 4000 advanced markers.
For this I obviously needed to use the MapMarkerClusterer component, but found it nearly impossible to customize the SuperClusterAlgorithm options, since the library only allows to add a maxZoom parameter if I'm not mistaken.

I tried creating a SuperClusterAlgorithm from @googlemaps/markerclusterer, but got an error that said

NG2: Type 'SuperClusterAlgorithm' is not assignable to type 'Algorithm_2'.
  The types of 'calculate(...).clusters' are incompatible between these types.
    Type 'import("C:/Users/g.sfratato/Documents/ProgettiGit/DebugAngular/DebugQ8/node_modules/@googlemaps/markerclusterer/dist/cluster").Cluster[]' is not assignable to type 'import("C:/Users/g.sfratato/Documents/ProgettiGit/DebugAngular/DebugQ8/node_modules/@angular/google-maps/index").Cluster[]'.
      Type 'import("C:/Users/g.sfratato/Documents/ProgettiGit/DebugAngular/DebugQ8/node_modules/@googlemaps/markerclusterer/dist/cluster").Cluster' is not assignable to type 'import("C:/Users/g.sfratato/Documents/ProgettiGit/DebugAngular/DebugQ8/node_modules/@angular/google-maps/index").Cluster'.
        Property '_position' is protected but type 'Cluster' is not a class derived from 'Cluster'.

For this reason I tried to solve the problem by changing the source code: in the index.d.ts file, I added this import

import { AbstractAlgorithm as Algorithm_2} from '@googlemaps/markerclusterer'

and commented out the Algorithm_2 interface definition.

After this, I could use the SuperClusterAlgorithm from @googlemaps/markerclusterer with no problems.

I have no idea if this is ok to do nor if it is feasable but wanted to share this with the community, thanks!

Use Case

In my use case I specifically wanted to change the radius parameter of the algorithm. After the fix, I could provide this algorithm object

algorithm = new SuperClusterAlgorithm({
        maxZoom: 10,
        radius: 100
    })

to the MapMarkerClusterer like this

<map-marker-clusterer [algorithm]="algorithm">
    @for (markerPosition of markerPositions; track $index) {
      <map-advanced-marker [position]="markerPosition"/>
    }
  </map-marker-clusterer>