[A/U/MeshGeoTools] Add MPI_Init() and MPI_Finalize()

Applications/Utils/MeshGeoTools/AssignRasterDataToMesh.cpp

...cations/Utils/MeshGeoTools/IntegrateBoreholesIntoMesh.cpp

Applications/Utils/MeshGeoTools/Raster2Mesh.cpp

Applications/Utils/MeshGeoTools/VerticalSliceFromLayers.cpp

...s/MeshGeoTools/computeSurfaceNodeIDsInPolygonalRegion.cpp

...ications/Utils/MeshGeoTools/createIntermediateRasters.cpp

Applications/Utils/MeshGeoTools/geometryToGmshGeo.cpp

Applications/Utils/MeshGeoTools/identifySubdomains.cpp