feat(backend): add emprunt restitution with automatic anomaly detection

eme-backend/src/routes/emprunt.routes.ts

@@ -1,8 +1,9 @@
 import { Router } from 'express';
-import { getMesEmprunts, postEmprunt } from '../controllers/emprunt.controller';
+import { getMesEmprunts, postEmprunt, postRestitution } from '../controllers/emprunt.controller';
 
 export const empruntRoutes: Router = Router();
 empruntRoutes.post('/', postEmprunt);
+empruntRoutes.post('/:id/restitution', postRestitution);
 
 export const mesEmpruntsRoutes: Router = Router();
 mesEmpruntsRoutes.get('/', getMesEmprunts);