Update GeoMap component to include adaptive zoom for small polygons

[Mocca101]

Especially for the entity detail view for Archaeological sites it can happen that the polygon for the grave is so small, that it won't be visible on the normal zoom levels.
I propose two changes to remedy this:

1. Increase the possible maximum zoom level for the detail view.
2. Swap between displaying small polygons as points or their original representation, depending on the zoom level.

The current implementation is an idea, but I am very open for changes as I think it might be beneficial, to separate between the needs of the global and entity map.
At the moment the implementation only works for the entity view, as it reduces all geometry to a single point, this might be enough for viewing a single entity but definitely not if we've got multiple entities on the map.

[stefanprobst]

can you provide a link to an example entity which has this issue? thanks!

[Mocca101]

can you provide a link to an example entity which has this issue? thanks!

Sure: https://openatlas-discovery-demo.acdh-ch-dev.oeaw.ac.at/en/entities/178530

[stefanprobst]

thanks!

for reference, this is the polygon in that example:

{
  "coordinates": [
    [
      [
        13.451995282,
        46.818657494
      ],
      [
        13.451997209,
        46.818661968
      ],
      [
        13.452019505,
        46.81865738
      ],
      [
        13.452017913,
        46.818652848
      ],
      [
        13.451995282,
        46.818657494
      ]
    ]
  ],
  "shapeType": "shape",
  "title": "01/72",
  "type": "Polygon"
}

to check: might be caused by precision (first two values after comma don't change). does setting tolerance or maxzoom change anything?