FEAT: Adding routes and controller to fetch chat from backend

[AshutoshSingh2021]

Related Problem

• Currently, the chat will disappear when you reload the application. The chat is saved in the database but a backend endpoint is needed to fetch the chat history from the backend.

Proposed Solution

• Write a controller to aggregate all the user's chat data and respond with an array of objects to the client side.

[AshutoshSingh2021]

If you want to work on this feature, drop a comment and start working.