refactor(backend): add output DTOs for existing endpoints

eme-backend/src/controllers/emprunt.controller.ts

@@ -1,6 +1,7 @@
 import { Request, Response } from 'express';
 import { AppError } from '../errors/app-error';
 import { listerMesEmpruntsEnCours } from '../services/emprunt.service';
+import { toEmpruntDto } from '../dtos/emprunt.dto';
 
 export async function getMesEmprunts(req: Request, res: Response): Promise<void> {
   const user = req.user;
@@ -9,5 +10,5 @@ export async function getMesEmprunts(req: Request, res: Response): Promise<void>
   }
 
   const emprunts = await listerMesEmpruntsEnCours(user.id);
-  res.json({ data: emprunts });
+  res.json({ data: emprunts.map(toEmpruntDto) });
 }