Ajout d'une interface et d'un trait pour chaque service et utilisation dans les factories

src/UnicaenLdap/Entity/Group.php

src/UnicaenLdap/Entity/People.php

src/UnicaenLdap/Service/AbstractService.php

src/UnicaenLdap/Service/GenericFactory.php

src/UnicaenLdap/Service/GroupFactory.php

src/UnicaenLdap/Service/LdapGenericServiceAwareInterface.php

src/UnicaenLdap/Service/LdapGenericServiceAwareTrait.php

src/UnicaenLdap/Service/LdapGroupServiceAwareInterface.php

src/UnicaenLdap/Service/LdapGroupServiceAwareTrait.php

src/UnicaenLdap/Service/LdapPeopleServiceAwareInterface.php

src/UnicaenLdap/Service/LdapPeopleServiceAwareTrait.php

...nicaenLdap/Service/LdapStructureServiceAwareInterface.php

src/UnicaenLdap/Service/LdapStructureServiceAwareTrait.php

src/UnicaenLdap/Service/LdapSystemServiceAwareInterface.php

src/UnicaenLdap/Service/LdapSystemServiceAwareTrait.php

src/UnicaenLdap/Service/PeopleFactory.php

src/UnicaenLdap/Service/StructureFactory.php

src/UnicaenLdap/Service/SystemFactory.php