New functions architecture - send the initialisation prompt to the LLMs

[tubamos]

Related task

• Save answers provided to the initialisation prompt as custom user-context #222

User Story

Acceptance Criteria

• The initialisation promt saved in the Google Docs document is passed ito the models to start inquiring information about the common-user.

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.