Create GeoJson dump mode for simulation

[antonio-leblanc]

• "There is already a JSon output, but less verbose than GeoJson, you can add it in “Stringrepresentation.cpp”.
• It uses the visitor pattern
• Please do not break the current lightweight JSON."

Geojson

• https://geojson.io/#map=2/0/20
• https://geojson.org/

C++

• https://stackoverflow.com/questions/20594520/what-exactly-does-stringstream-do
• https://www.simplilearn.com/tutorials/cpp-tutorial/string-stream-in-cpp
• https://stackoverflow.com/questions/44821598/remove-last-char-in-stringstream

C++ reproject

• https://gis.stackexchange.com/questions/269698/coordinates-reprojection-with-gdal-in-c