feat: initialize news service with core functionality

- Add package.json for project configuration and dependencies.
- Implement NewsApplication class to manage service lifecycle and HTTP pipeline.
- Create CategoryCatalog for managing news categories.
- Introduce ServiceConfig for environment variable management.
- Load environment variables from .env files.
- Develop NewsApiCompatibilityController to mimic NewsAPI endpoints.
- Create NewsController for querying and refreshing news data.
- Establish AbstractJsonRepository for JSON storage operations.
- Implement main entry point in index.js to bootstrap the application.
- Create CategoryNewsRepository for category-specific news storage.
- Add ConsoleLogger for structured logging.
- Implement NewsApiClient for fetching articles from NewsAPI.
- Develop NewsRefreshScheduler for scheduling news refresh tasks.
- Create NewsStorageService to coordinate news data management.

docker-compose.yml

@@ -0,0 +1,21 @@
+version: '3.9'
+
+services:
+  news-service:
+    build: .
+    container_name: news-service
+    env_file:
+      - .env.example
+    ports:
+      - "3100:3100"
+    environment:
+      PORT: 3100
+      NEWS_API_KEY: ${NEWS_API_KEY}
+      NEWS_API_BASE_URL: ${NEWS_API_BASE_URL:-https://newsapi.org/v2/everything}
+      NEWS_API_LANGUAGE: ${NEWS_API_LANGUAGE:-en}
+      NEWS_PAGE_SIZE: ${NEWS_PAGE_SIZE:-20}
+      NEWS_REFRESH_CRON: ${NEWS_REFRESH_CRON:-0 * * * *}
+      DATA_DIR: ${DATA_DIR:-/app/data}
+    volumes:
+      - ./data:/app/data
+    restart: unless-stopped