RK-A2

Create blueprints openai, qna
Shift the call_openai_api, set_openai_key, set_prompt_mods, set_kb inside openai blueprint.
store_text_file, crud_ds, get_file, set_questions_list, get_questions_list, get_question inside qna blueprint.

And register these blueprint in flask application.
(Note- You can take help from this article to create blueprint [[https://www.digitalocean.com/community/tutorials/how-to-structure-a-large-flask-application-with-flask-blueprints-and-flask-sqlalchemy]]