Description

Adds metadata to the MongoDB vector store for telemetry.

Type of change

Please delete options that are not relevant.

• Refactor (does not change functionality, e.g. code style improvements, linting)

How Has This Been Tested?

No additional testing, as this is purely a telemetry update that uses existing code within PyMongo.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

Maintainer Checklist

• closes #xxxx (Replace xxxx with the GitHub issue number)
• Made sure Checks passed