Adding new file for the structures of the openDDL. I will create intermediary classes to preread the openDDL file and then I will create a process to pass from that intermediate structures to openGEX
Adding more constructors for the structures classes, and using doxygen to document properly
Fixing the default values of the identificators. Fixing the initial enum for the type of structures. Adding get and set functions for father class. ToDO: Set all the get and set for all variables of the classes
Commiting also the new solution for visualStudio with the new file openDDL_structures