Add VectorStore integration for alibaba cloud opensearch vector service (#13286)

docs/docs/community/integrations/vector_stores.md

...mples/vector_stores/AlibabaCloudOpenSearchIndexDemo.ipynb

docs/docs/module_guides/storing/vector_stores.md

llama-index-cli/llama_index/cli/upgrade/mappings.json

llama-index-core/llama_index/core/command_line/mappings.json

...ma-index-vector-stores-alibabacloud-opensearch/.gitignore

...s/llama-index-vector-stores-alibabacloud-opensearch/BUILD

...lama-index-vector-stores-alibabacloud-opensearch/Makefile

...ama-index-vector-stores-alibabacloud-opensearch/README.md

...h/llama_index/vector_stores/alibabacloud_opensearch/BUILD

...a_index/vector_stores/alibabacloud_opensearch/__init__.py

...llama_index/vector_stores/alibabacloud_opensearch/base.py

...ndex-vector-stores-alibabacloud-opensearch/pyproject.toml

...a-index-vector-stores-alibabacloud-opensearch/tests/BUILD

...x-vector-stores-alibabacloud-opensearch/tests/__init__.py

...earch/tests/test_vector_stores_alibabacloud_opensearch.py