message: Clean hearders
diff: #include <ringmesh/ringmesh_tests_config.h>
  -#include <algorithm>
  -#include <string>
  -
  #include <geogram/basic/command_line.h>
  #include <geogram/basic/line_stream.h>
  #include <ringmesh/basic/algorithm.h>
  -#include <ringmesh/basic/command_line.h>
  +
  #include <ringmesh/geomodel/geomodel.h>
  -#include <ringmesh/geomodel/geomodel_geological_entity.h>
  -#include <ringmesh/geomodel/geomodel_validity.h>
  +
  #include <ringmesh/io/io.h>
  /*!
  