Add observability support for the existing Vector Store implementations.

[tzolov]

The #1205 provided the infrastructure for VectorStore Observability support.
Building on it we should add observability support for the existing Vector Store implementations.

• Azure
• Cassandra
• Chroma
• ElasticSearch
• GemFire
• HanaDB (NOTE: have not been able to create Hana account)
• Milvus
• MongoDB (NOTE: unable to run the MongoDB test containers on my Mac/M3)
• Neo4j
• OpenSearch
• Oracle (NOTE: unable to run the Oracle test containers on my Mac/M3)
• PGVector
• Pinecone
• Qdrant
• Redis
• Typesense
• Weaviate

[tzolov]

Resolved by 93fa2bf