[Feature Request]: Ability to close local clients

[eulibot]

Describe the problem

Currently, there is no way to terminate a client through the API, like via a .close() or .shutdown() function.

This may not seem necessary but I'd like to highlight one particular example where it does make a difference. While the PersistentClient is active, files are open to handle the metadata and indexing on the db. These files stay open and I'm assuming are only closed via garbage collection -- but there is no way through the API to explicitly close these files. If you want to save the db while the PersistentClient is active, this can cause "file open" issues.

Describe the proposed solution

Add a public API function to close local clients. Maybe only necessary for PersistentClient.

Alternatives considered

No response

Importance

i cannot use Chroma without it

Additional Information

No response