Add support for returning document vector data when get one document

[JiaYingZhang]

Pull Request

Related issue

What does this PR do?

• Support return document vector data with get one document

PR checklist

Please check if your PR fulfills the following requirements:

• [x] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• [x] Have you read the contributing guidelines?
• [x] Have you made sure that the title is accurate and descriptive of the changes?

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Summary by CodeRabbit

• New Features
  • Added an option to include document vector data in search results.
• Documentation
  • Updated usage examples to demonstrate how to enable retrieval of document vectors in queries.