Add first version of the P2P collision counter

cpp/full_code/static_field_with_ghost_collisions.cpp

cpp/full_code/static_field_with_ghost_collisions.hpp

cpp/particles/abstract_particles_system_with_p2p.hpp

cpp/particles/p2p_computer.hpp

cpp/particles/p2p_computer_empty.hpp

cpp/particles/p2p_cylinder_collisions.hpp

cpp/particles/p2p_distr_mpi.hpp

cpp/particles/p2p_ghost_collisions.hpp

cpp/particles/particles_system.hpp

cpp/particles/particles_system_builder.hpp