Integrate VectorStore from Elasticsearch client (#13291)

.../docs/examples/vector_stores/ElasticsearchIndexDemo.ipynb

docs/docs/examples/vector_stores/Elasticsearch_demo.ipynb

...earch/llama_index/vector_stores/elasticsearch/__init__.py

...ticsearch/llama_index/vector_stores/elasticsearch/base.py

...icsearch/llama_index/vector_stores/elasticsearch/utils.py

...es/llama-index-vector-stores-elasticsearch/pyproject.toml

...ndex-vector-stores-elasticsearch/tests/docker-compose.yml

...s-elasticsearch/tests/test_vector_stores_elasticsearch.py