Is your feature request related to a problem? Please describe

Currently GRPC only supports the Bulk API for ingestion: https://docs.opensearch.org/latest/api-reference/grpc-apis/bulk/

Describe the solution you'd like

We would like to support single doc ingestion APIs as well

• IndexDocument
• UpdateDocument
• GetDocument
• DeleteDocument

Related component

Indexing

Describe alternatives you've considered

No response

Additional context

No response