(aws-rag-appsync-stepfn-opensearch): CRUD operations on documents

[krokoko]

Describe the feature

As of today, users can only ingest documents and create embeddings. There is no CRUD operations to update or delete existing documents. The only way a user can update or remove embeddings is by deleting the OSS instance, and re-deploying one.

Use Case

Users have to destroy/re-deploy their stack if they want to update their embeddings

Proposed Solution

No response

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

[scottschreckengaust]

#443