Adding ghost particles images

images/Makefile.am

images/vector.cpp

images/vector_ghost.py

openfpm_numerics

src/Decomposition/CartDecomposition.hpp

src/Grid/grid_dist_id.hpp

src/Grid/grid_dist_id_iterator.hpp

src/Grid/grid_dist_id_unit_test_ext_dom.hpp

src/Grid/grid_dist_key.hpp

src/Grid/staggered_dist_grid.hpp

src/Grid/staggered_dist_grid_util.hpp

src/Vector/vector_dist.hpp

src/gargabe.hpp