Add Entities

Back_end/composer.json

Back_end/src/Entity/Adherent.php

Back_end/src/Entity/Adhesion.php

Back_end/src/Entity/Groupe.php

Back_end/src/Entity/JourCalendrier.php

Back_end/src/Entity/Periode.php

Back_end/src/Entity/Structure.php

Back_end/src/Repository/AdhesionRepository.php

Back_end/src/Repository/GroupeRepository.php

Back_end/src/Repository/JourCalendrierRepository.php

Back_end/src/Repository/PeriodeRepository.php

Back_end/src/Repository/StructureRepository.php

Back_end/symfony.lock