Bulk add nodes and edges

[prasmussen15]

[!IMPORTANT] Enhance graph database operations with bulk node and edge processing and introduce parallel runtime support for improved performance.

• Behavior:
  • Add group_id parameter to add_episode in graphiti.py.
  • Replace individual node and edge saves with add_nodes_and_edges_bulk() in graphiti.py.
  • Introduce USE_PARALLEL_RUNTIME in helpers.py for parallel query execution.
• Database Queries:
  • Add bulk save queries EPISODIC_EDGE_SAVE_BULK and ENTITY_EDGE_SAVE_BULK in edge_db_queries.py.
  • Add bulk save queries EPISODIC_NODE_SAVE_BULK and ENTITY_NODE_SAVE_BULK in node_db_queries.py.
• Search Utilities:
  • Use USE_PARALLEL_RUNTIME to conditionally apply parallel runtime in search_utils.py.
  • Reduce MAX_QUERY_LENGTH to 32 in search_utils.py.
• Utilities:
  • Add add_nodes_and_edges_bulk() and add_nodes_and_edges_bulk_tx() in bulk_utils.py for batch processing of nodes and edges.

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