Update server port and enhance dependencies in requirements

- Changed the server port from 8000 to 7860 in the `main.py` file to accommodate new configuration settings.
- Added `Pillow`, `requests`, and `aiofiles` to the `requirements.txt` file to support additional functionality and improve project capabilities.
- These updates aim to ensure the application runs on the correct port and has the necessary libraries for enhanced performance and features.

main.py

@@ -113,4 +113,4 @@ async def startup_event():
 
 if __name__ == "__main__":
     import uvicorn
-    uvicorn.run(app, host="0.0.0.0", port=8000)
+    uvicorn.run(app, host="0.0.0.0", port=7860)

requirements.txt

@@ -7,4 +7,7 @@ langchain
 langchain-openai
 langgraph
 langchain-core
-supabase 
+supabase
+Pillow
+requests
+aiofiles