Add image generation tool to agent for enhanced functionality

app.py

@@ -66,6 +66,7 @@ agent = CodeAgent(
         get_current_time_in_timezone,
         DuckDuckGoSearchTool(),
         VisitWebpageTool(),
+        image_generation_tool,
     ],  ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,