* Add get_nodes_by_query method to Graphiti class
Add a method to the Graphiti class that wraps `get_relevant_nodes` and returns a list of nodes given a query.
* Add `get_nodes_by_query` method to the `Graphiti` class in `graphiti_core/graphiti.py`.
* Import `generate_embedding` from `graphiti_core/llm_client/utils.py`.
* Use `generate_embedding` to generate an embedding for the query.
* Call `get_relevant_nodes` with the generated embedding and return the relevant nodes.
Add an embedding function to `llm_client/utils.py`.
* Add `generate_embedding` function to `graphiti_core/llm_client/utils.py`.
* Accept an embedder and model_id as parameters.
* Generate an embedding for the given text and return it.
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For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/getzep/graphiti?shareId=XXXX-XXXX-XXXX-XXXX).
* address comments left by @danielchalef on #49 (Add get_nodes_by_query method to Graphiti class);
* fix ellipsis name in cla config
* feat: Add get_nodes_by_query method to Graphiti class
* chore: Cleanup unused files, add hybrid node search, add tests
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Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>
Co-authored-by: paulpaliychuk <pavlo.paliychuk.ca@gmail.com>
