Changes

• Add is_vector_index() method to core::management::search::index that checks whether any fields in the index definition have type "vector" or "vector_base64".
• When upserting a search index, check whether the index is a vector index and check whether the vector search cluster capability is present. If not, return the feature_not_available error code.
• Add unit tests for is_vector_index() and an integration test for the capability check.
• Move the search index management integration tests to a separate file.

Results

All tests pass