Merge branch 'dev' into 'main'

backend/app/models.py

backend/app/schemas.py

frontend/src/lang/en.json

frontend/src/lang/fr.json

frontend/src/lib/types/surveyGroup.ts

frontend/src/routes/sessions/[id]/Message.svelte

frontend/src/routes/tests/[id]/+page.svelte

frontend/static/surveys/items/1000/1.jpeg

frontend/static/surveys/items/1000/2.jpeg

frontend/static/surveys/items/1000/3.jpeg

frontend/static/surveys/items/1000/4.jpeg

frontend/static/surveys/items/1000/q.mp3

frontend/static/surveys/items/1001/1.jpeg

frontend/static/surveys/items/1001/2.jpeg

frontend/static/surveys/items/1001/3.jpeg

frontend/static/surveys/items/1001/4.jpeg

frontend/static/surveys/items/1001/q.mp3

frontend/static/surveys/items/1002/1.jpeg

frontend/static/surveys/items/1002/2.jpeg

frontend/static/surveys/items/1002/3.jpeg