Add DuckDuckGo and Google News wrappers; refactor CryptoPanic and NewsAPI

- Implemented DuckDuckGoWrapper for news retrieval using DuckDuckGo tools.
- Added GoogleNewsWrapper for accessing Google News RSS feed.
- Refactored CryptoPanicWrapper to unify get_top_headlines and get_latest_news methods.
- Updated NewsApiWrapper to simplify top headlines retrieval.
- Added tests for DuckDuckGo and Google News wrappers.
- Enhanced documentation for CryptoPanicWrapper and NewsApiWrapper.
- Created base module for social media integrations.

pyproject.toml

@@ -33,6 +33,7 @@ dependencies = [
     # ✅ per interagire con API di notizie
     "newsapi-python",
     "gnews",
+    "ddgs",
 ]
 
 [tool.pytest.ini_options]