refactor: RAG with Trieve guide

[skeptrunedev]

• move RAG on specified chunks to last
• explain topic/message system
  • explain how owner_id works for RAG
  • explain how events work for RAG with ratings and feedback
• messages
  • explain how to include images in RAG conversations
  • explain how to use voice queries
  • explain edit message
  • explain regenerate message

[skeptrunedev]

This page - https://docs.trieve.ai/guides/RAG-with-trieve