… this is building.

…ywords.

would be amazing to get rust-bert to work.

…ients

- Update Cargo.toml with new dependencies
- Modify config.json to include Neo4j settings
- Refactor cohere_client.rs and google_ai_client.rs for graph compatibility
- Enhance config.rs to support new Neo4j configuration
- Implement Neo4j client functionality in neo4j_client.rs
- Update main.rs to incorporate graph-based operations
- Gitignore .idea/ directory

This commit advances the graph integration feature, improving AI client
interactions with the Neo4j database and setting up the groundwork for
more sophisticated data operations.