add global chatroom

[GregSherman]

There will be a chats model with a message, date, user.

must use server side events for live chats. When a new chat comes in, process it for slurs and stuff and if it passes, async add it to the model and send it to users.

When a user loads the chat, take the last 10 and send it. paginate relying on chatId (so 10 more before the chatId).

[AshkanAleshams]

have to be careful about this, dont want the application to be used by online preds. Is there an automod tool we can use?