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b65ac8d3 - community[minor]: Self query retriever for HANA Cloud Vector Engine (#24494)

community[minor]: Self query retriever for HANA Cloud Vector Engine (#24494) Description: - This PR adds a self query retriever implementation for SAP HANA Cloud Vector Engine. The retriever supports all operators except for contains. - Issue: N/A - Dependencies: no new dependencies added **Add tests and docs:** Added integration tests to: libs/community/tests/unit_tests/query_constructors/test_hanavector.py **Documentation for self query retriever:** /docs/integrations/retrievers/self_query/hanavector_self_query.ipynb --------- Co-authored-by: Bagatur <baskaryan@gmail.com> Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>