Merge branch 'interface_admin' into 'main'

backend/db/crud.py

backend/db/models.py

backend/db/schemas.py

backend/main.py

backend/routers/authentication.py

backend/routers/infos.py

backend/routers/news.py

frontend/src/components/ClosureForm.js

frontend/src/components/Comments.js

frontend/src/components/Header.js

frontend/src/components/NewsForm.js

frontend/src/components/index.js

frontend/src/index.js

frontend/src/styles/Admin.css

frontend/src/styles/Comments.css

frontend/src/styles/NewsForm.css

frontend/src/views/AdminPage.js

frontend/src/views/index.js