push notification implemented

need testing

backend/src/modules/articles.module.ts

@@ -4,11 +4,13 @@ import { ArticlesService } from './articles.service';
 import { ArticlesController } from './articles.controller';
 import { Article, Author, Category } from './entities';
 import { StrapiModule } from './strapi.module';
+import { PushModule } from './push/push.module';
 
 @Module({
   imports: [
     TypeOrmModule.forFeature([Article, Author, Category]),
     forwardRef(() => StrapiModule),
+    forwardRef(() => PushModule),
   ],
   controllers: [ArticlesController],
   providers: [ArticlesService],