New functions architecture - integrate the old chat bubble functionality

[tubamos]

Related:

• Integrate the chat app components with the LLM in the backend #225

Description

Integrate the old chat bubble functionality to the new firebase functions architecture

User Story

Acceptance Criteria

• The subcomponents related to the way the chat bubble was working before Preet changed the front end are back and functional

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.