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.

src/app/news/duckduckgo.py

@@ -0,0 +1,32 @@
+import json
+from .base import Article, NewsWrapper
+from agno.tools.duckduckgo import DuckDuckGoTools
+
+def create_article(result: dict) -> Article:
+    article = Article()
+    article.source = result.get("source", "")
+    article.time = result.get("date", "")
+    article.title = result.get("title", "")
+    article.description = result.get("body", "")
+    return article
+
+class DuckDuckGoWrapper(NewsWrapper):
+    """
+    A wrapper for DuckDuckGo News search using the Tool from agno.tools.duckduckgo.
+    It can be rewritten to use direct API calls if needed in the future, but currently is easy to write and use.
+    """
+
+    def __init__(self):
+        self.tool = DuckDuckGoTools()
+        self.query = "crypto"
+
+    def get_top_headlines(self, total: int = 100) -> list[Article]:
+        results = self.tool.duckduckgo_news(self.query, max_results=total)
+        json_results = json.loads(results)
+        return [create_article(result) for result in json_results]
+
+    def get_latest_news(self, query: str, total: int = 100) -> list[Article]:
+        results = self.tool.duckduckgo_news(query or self.query, max_results=total)
+        json_results = json.loads(results)
+        return [create_article(result) for result in json_results]
+