Extract common vector store delete tests to base class This commit extracts shared delete operation tests into a reusable BaseVectorStoreTests class. This reduces code duplication and provides a consistent test suite for delete operations across different vector store implementations. The base class includes tests for: Deleting by ID Deleting by filter expressions Deleting by string filter expressions Most of the vector store implementation now extends this base class and inherits these common tests while maintaining the ability to add vector store specific tests. Adding javadoc Signed-off-by: Soby Chacko <soby.chacko@broadcom.com>
TODO:
Documentation and sample tests using the BasicEvaluationTest.