Refactor: deplacer backend dans apps/backend

apps/backend/app/routers/experiences.py

@@ -0,0 +1,17 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session, joinedload
+
+from app.database import get_db
+from app.models.experience import Experience
+from app.schemas.experience import ExperienceResponse
+
+router = APIRouter(prefix="/experiences", tags=["Experiences"])
+
+
+@router.get("/", response_model=list[ExperienceResponse])
+def get_experiences(db: Session = Depends(get_db)):
+    return (
+        db.query(Experience)
+        .options(joinedload(Experience.tasks))
+        .all()
+    )