Align naming of request/response for IValidateQueryRequest and IValidateResponse

[russcam]

The ElasticClient.Validate() methods take a request type of IValidateQueryRequest but return a response type of IValidateResponse. The naming is not consistent with the general request/response naming convention (where there is a one-to-one mapping of request type to response type).

@Mpdreamz, @gmarz - should IValidateQueryRequest be renamed to IValidateRequest?

[Mpdreamz]

I'm +1 on renaming to client.ValidateQuery() and ValidateQueryResponse

[russcam]

👍

[gmarz]

+1