feat: Intégration du backend NestJS depuis YNOV

- Framework: NestJS avec TypeORM
- Authentification: JWT (access + refresh tokens)
- Gestion utilisateurs: CRUD complet avec validation
- Routes: auth, users, parents, assistantes maternelles
- Dockerfile pour conteneurisation

backend/src/entities/notifications.entity.ts

@@ -0,0 +1,23 @@
+import { Column, CreateDateColumn, Entity, JoinColumn, ManyToOne, PrimaryGeneratedColumn } from "typeorm";
+import { Users } from "./users.entity";
+
+@Entity('notifications')
+export class Notification {
+    // Define your columns and relationships here
+    @PrimaryGeneratedColumn('uuid')
+    id: string;
+
+    @ManyToOne(() => Users, { onDelete: 'CASCADE' })
+    @JoinColumn({ name: 'id_utilisateur', referencedColumnName: 'id' })
+    user: Users;
+
+    @Column({ type: 'text', name: 'contenu' })
+    content: string;
+
+    @Column({type: 'boolean', name: 'lu', default: false})
+    read: boolean;
+
+    @CreateDateColumn({ name: 'cree_le', type: 'timestamptz' })
+    created_at: Date;
+
+}