feat: enhance markdown migration and embedding processes with entity-aware summaries and provenance context

Merge branch 'main' of https://github.com/Abdullah-Khan-Sherwani/BlackboxRAG

feat: implement parent chunking, diversity tuning, and network resilience

my changes

feat: Updated embeddings file and completed embeddings generation

feat: Updated requirements

feat: Add script to generate and save Jina embeddings for various text chunking strategies.