Add available tools to the agent

Add the following tools to the agent: DuckDuckGoSearchTool, get_papers_url_for_date, get_current_time_in_timezone.

Do not add image_generation_tool because the agent should focus on papers and their evaluation.

app.py

@@ -52,7 +52,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[final_answer, DuckDuckGoSearchTool, get_papers_url_for_date, get_current_time_in_timezone],
     max_steps=6,
     verbosity_level=1,
     grammar=None,