added rudamentary search and code execution

search.py

@@ -0,0 +1,37 @@
+import os
+import dotenv
+
+from config import Config
+
+dotenv.load_dotenv('./.env')
+
+from langchain.tools import Tool
+from langchain_community.utilities import GoogleSerperAPIWrapper
+
+# Set up the search tool
+search = GoogleSerperAPIWrapper(serper_api_key=os.getenv("SERPER_API_KEY"))
+tool = Tool(
+    name="Web Search",
+    func=search.run,
+    description="Useful for finding real-time information on the web."
+)
+
+
+def perform_web_search(query: str):
+    try:
+        if not query or query.strip() == "" or query.strip().lower() == 'none':
+            return ["", []]
+            
+        results = tool.run(query.strip())
+        if not results:
+            return ["No web results found", []]
+            
+        # Extract snippets and links from search results
+        if 'organic' in results:
+            snippets = "\n".join([f"{res['title']}: {res['snippet']}" 
+                                  for res in results['organic'][:Config.MAX_SEARCH_RESULTS]])
+            links = [res['link'] for res in results['organic'][:Config.MAX_SEARCH_RESULTS]]
+            return [snippets, links]
+        return [str(results), []]
+    except Exception as e:
+        return [f"Search error: {str(e)}", []]