Make it easier to get world administrative boundaries

[koettert]

To get the boundaries for all countries int he world the user either has to use the OSM Boundary node in a loop which takes a long time or has to user external data such as in this workflow.

The goal of this ticket is to make it easier to get the polygons for countries and ideally also states within a country similar to the TIGER Map node. Make sure that the license of the data source also allows commercial use.

Possible solutions:

• Support multiple inputs e.g. table with country, boundary names in the OSM Boundary node and speedup the performance
• Implement a new node that uses an alternative data source e.g. https://www.geoboundaries.org/api.html or stores the boundaries locally for very fast retrieval https://public.opendatasoft.com/explore/dataset/world-administrative-boundaries/export/
• https://gadm.org/ could be an alternative but the license forbids commercial use