feat: format options

[RobertOrthofer]

This PR implements the possibility to use format options, additionally to the simple syntax that was implemented before. If the format is supposed to use a projection, that projection has to be registered via eoxMap.registerProjection(...) beforehand, like this has already to be done for view projections.

Because ol formats are very diverse in their appearance, i have left typing to a minimum, only requiring the "type" (like GeoJSON), and optional properties dataProjection and featureProjection, as i suppose that these will be the most used ones. Format options vary widely, @ts-ignores will be needed for more exotic formats.

example simple format (unchanged):

"source": {
      "type": "Vector",
      "url": "https://openlayers.org/data/vector/ecoregions.json",
      "format": "GeoJSON",
    },

example format with options:

"source": {
      "type": "Vector",
      "url": "https://openlayers.org/data/vector/ecoregions.json",
      "format": {
            "type": "GeoJSON",
            "dataProjection": "EPSG:53009"
      }
    },

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closes #999

[santilland]

I can use the eoxMap.setAttribute("projection", "..."); to set correctly the projection for the entire map i have registered.
But when i use the format dataprojection parameter for a vector source it does not seem to be applied at all, not sure what the issue is, any ideas @RobertOrthofer ?

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[santilland]

After integration testing and changing how the parameters are passed all seems to work as expected, so let's merge, thank you!