Adds the typeRole package - increments in the functionality of Identity

* New package TypeRole(Service, Impl, Client)
* The IdentityService implement Generic
* Adds the entities: User, Group and TypeRolle, them extends of IdentitySummary, and these entities have the temporary id, us should change when we persist these objects
* Adds service and impl "Identity Service Mock" it return the list of users, groups and typesRoles 

Note:
* a user may belong to one o more groups, and one o more TypesRole
* a Group may have a parent Group