Atria RAG generate DB changelog

Changelog of Atria RAG generate DB for Shakira Aura Platform release

Added

2025-08-11 - Instructions to launch atria-rag-generate-db

Changed

2025-06-24 - Restructuring of component documentation

2025-06-24 - Improved process logs

The atria-rag-generate-db job uploaded some logs with wrong formatting to Elastic, where certain mandatory fields were missing. This behavior has been improved, and logs are now generated with the expected fields in correct format.