feat(graph): add Neo4j-based GraphRAG query engine#92

bernardev254 wants to merge 3 commits intoflare-foundation:mainflare-foundation/flare-ai-kit:mainfrom

bernardev254:fix-17-graphrag-implement-query-engine-and-ai-agent-connectors-for-contextual-graph-queriesbernardev254/flare-ai-kit:fix-17-graphrag-implement-query-engine-and-ai-agent-connectors-for-contextual-graph-queriesCopy head branch name to clipboard