Add Specs for Search Pipeline SearchResponseProcessors

[dbwiddis]

What is the bug?

Coming from https://github.com/opensearch-project/OpenSearch/issues/14800#issuecomment-2237118907

I need to add specs/test for two new search response processors. However, non of the existing processors exist to serve as an example. A search for rerank has no code results. Similarly for rename_field.

It does look like these used to be part of the smithy spec. but that code has been removed.

It looks like the request processors are included in https://github.com/opensearch-project/opensearch-api-specification/blob/main/spec/schemas/search_pipeline._common.yaml but I don't see any of the response types there

• this may be a typo

Do you have any additional context?

The PRs for the two new processor types are targeted for 2.16.0 release.

I don't have the bandwidth to manually recreate all the response processors prior to 2.16.0 code freeze, and I'm hopeful automation already exists to translate them from the old Smithy specs.