corrected contracts entity

src/entities/contrats.entity.ts

@@ -28,6 +28,9 @@ export class Contrat {
   @Column({type: 'numeric', precision: 6, scale: 2, nullable: true, name: 'indemnites_repas'})
   meal_indemnity?: string;
 
+  @Column( { name: 'date_debut', type: 'date', nullable: true })
+  start_date?: Date;
+
   @Column({
     type: 'enum',
     enum: StatutContratType,