can serialize data for HRU actor with routines from Reza

build/includes/global/auxilary.hpp

build/includes/global/message_atoms.hpp

build/includes/hru_actor/hru_actor.hpp

build/includes/hru_actor/serialize_data_structure.hpp

build/makefile_sundials

build/source/actors/global/auxiliary.cpp

build/source/actors/hru_actor/hru_actor.cpp

build/source/actors/hru_actor/hru_actor.f90

build/source/actors/hru_actor/serialize_data_structure.cpp

build/source/driver/summaActors_wOutputStruc.f90