Move {read,write}Geometry{From,To}File to GeoLib/IO.

Applications/DataExplorer/mainwindow.cpp

Applications/Utils/FileConverter/CMakeLists.txt

...Utils/MeshEdit/CreateBoundaryConditionsAlongPolylines.cpp

...tions/Utils/MeshEdit/ResetPropertiesInPolygonalRegion.cpp

...s/MeshGeoTools/ComputeSurfaceNodeIDsInPolygonalRegion.cpp

...tils/ModelPreparation/ComputeNodeAreasFromSurfaceMesh.cpp

Applications/Utils/OGSFileConverter/OGSFileConverter.cpp

FileIO/CMakeLists.txt

GeoLib/CMakeLists.txt

GeoLib/IO/Legacy/OGSIOVer4.cpp

GeoLib/IO/Legacy/OGSIOVer4.h

GeoLib/IO/readGeometryFromFile.cpp

GeoLib/IO/readGeometryFromFile.h

GeoLib/IO/writeGeometryToFile.cpp

GeoLib/IO/writeGeometryToFile.h

Tests/CMakeLists.txt

Tests/GeoLib/IO/TestGLIReader.cpp