feat(backend): implement gestionnaire creation with email notification (#17)

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/routes/user/gestionnaires/gestionnaires.module.ts

@@ -4,11 +4,13 @@ import { GestionnairesController } from './gestionnaires.controller';
 import { Users } from 'src/entities/users.entity';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { AuthModule } from 'src/routes/auth/auth.module';
+import { MailModule } from 'src/modules/mail/mail.module';
 
 @Module({
   imports: [
     TypeOrmModule.forFeature([Users]),
     AuthModule,
+    MailModule,
   ],
   controllers: [GestionnairesController],
   providers: [GestionnairesService],