Hello Team,

Thank you for developing this excellent project! I would like to suggest adding support for OpenSearch as a new store option in py-key-value.

At present, py-key-value works with Elasticsearch through its official Python client. However, it cannot be used with OpenSearch, as it results in the following error message:

elasticsearch.UnsupportedProductError: The client noticed that the server is not Elasticsearch and we do not support this unknown product

Since Amazon OpenSearch is widely used as an alternative to Elasticsearch in many enterprises, adding support for it would be highly beneficial. I believe this would require integration with the opensearch-py client.

Thank you!