Nearest Join node with option to return top k nearest points

[koettert]

Requested in the forum: https://forum.knime.com/t/geospatial-extension-nearest-join-k-result/76647

The Nearest Join node should have a new parameter which specifies how many nearest points should be returned per search. By default the parameter is 1 and uses the existing implementation. If it is greater 1 it would use a new implementation maybe similar to what is proposed here: https://stackoverflow.com/questions/62198199/k-nearest-points-from-two-dataframes-with-geopandas

[koettert]

@UrbanGISer please create a component for this which we will publicly release in the new Component space on KNIME Community Hub after verification.

[UrbanGISer]

create a folder for Geospatial Components KNIME hub link