OpenSearch DSL

The `opensearch-dsl` library provides a high-level, declarative Python client for OpenSearch, enabling users to work with OpenSearch entities like documents and search queries as Python objects. It simplifies query construction and common OpenSearch operations, building on top of the lower-level `opensearch-py` client. The current version is 2.1.0. It has been announced that this library will be deprecated after version 2.1.0, with its functionality merged into `opensearch-py`.