Added the "overwrite" parameter, which eliminates the need to rebuild the vector store each time.

[mggger]

Description

Add the "overwrite" parameter so that the vector store does not need to be rebuilt every time a query is made.

code example:

description_embedding_store = LanceDBVectorStore(
        collection_name="entity_description_embeddings")

description_embedding_store.connect(db_uri=LANCEDB_URI)

entity_description_embeddings = dfs.store_entity_semantic_embeddings(
        entities=[],
        vectorstore=description_embedding_store,
        overwrite=False
)

Related Issues

fix #1048

Proposed Changes

Function adds the "overwrite" parameter.

Checklist

• [x] I have tested these changes locally.
• [x] I have reviewed the code changes.
• [ ] I have updated the documentation (if necessary).
• [x] I have added appropriate unit tests (if applicable).

Additional Notes