Setups the path pointing to the directory where data will be saved
setup_path.RdChecks if the path points to an existing folder, and builds four new folders that will hold the downloaded data : bd_foret, copernicus, corine_land_cover, territory.
setup_path.RdChecks if the path points to an existing folder, and builds four new folders that will hold the downloaded data : bd_foret, copernicus, corine_land_cover, territory.