Integrate chat in the main app

[tubamos]

Item type: app frontend, app backend

Description:
Integration of the chat interface into the main app, ensuring it is visible and functional, allowing users to interact with stored chat data, send questions/requests, and view a default screen when no chat is selected.

User story

As a developer,
I want to integrate the chat interface to the main app
so that the user have access to the chat interface and conviniently interact with the agent.

Acceptance criteria

• The chat interface should be visible within the main app.
• Users can open chats from the drawer, and the selected chat content should be displayed.
• When a user sends a message, the database is updated with the new message.
• If no chat is selected, a default screen should be displayed.
• The chat interface design should be consistent with the main app's design.

Definition of done

• The feature has been fully implemented.
• The feature has been manually tested and works as expected without critical bugs.
• The feature code is documented with clear explanations of its functionality and usage.
• The feature code has been reviewed and approved by at least one team member.
• The feature branches have been merged into the main branch and closed.
• The feature utility, function and usage have been documented in the respective project wiki on github.