Consider features from llamaindex full-stack guides

[fjsj]

• https://docs.llamaindex.ai/en/stable/understanding/putting_it_all_together/apps/fullstack_app_guide/
• https://docs.llamaindex.ai/en/stable/understanding/putting_it_all_together/apps/fullstack_with_delphic/
• https://docs.llamaindex.ai/en/stable/understanding/putting_it_all_together/chatbots/building_a_chatbot/
• https://docs.llamaindex.ai/en/stable/understanding/putting_it_all_together/q_and_a/terms_definitions_tutorial/

What features are in those tutorials that we can provide in a reusable app like ours?

Related task: https://github.com/vintasoftware/django-ai-assistant/issues/13