Hs websockets

[Hanson-Sun]

I implemented a basic chat room with async connections. Currently a demo but everything works. Here are some general instructions on how to test the developmental chat feature (please make sure to install the new dependencies).

• start server
• Chat: http://127.0.0.1:8000/chat/
• join a chat room with the same name and start sending messages

Improvements:

• scalable channels with Redis or similar (we might need to use docker then)
• integration with the rest of the components
• link instructions with WebSockets for front end to use.
• storage of message data in databases
• refine the consumers and how the chat interacts with the rest of the application