Merge branch 'iteration4' into 'main'

...duction/infrastructureLogicielleClient/opinion/Book.class

...nfrastructureLogicielleClient/opinion/SocialNetwork.class

.../infrastructureLogicielleClient/tests/AddMemberTest.class

src/opinion/Book.java

src/opinion/Film.java

src/opinion/Item.java

src/opinion/SocialNetwork.java

src/tests/AddItemBookTest.java

src/tests/AddItemFilmTest.java

src/tests/ConsultItemFilmTest.java

src/tests/ReviewItemFilmTest.java