Support `StructuredResponseCreateParams` in `ResponseServiceAsync`

[mrdziuban]

It would be nice to be able to use StructuredResponseCreateParams along with an async client and ResponseServiceAsync, similar to how ResponseService has overloads of create that accept a StructuredResponseCreateParams<T> and return a StructuredResponse<T>.

Thanks in advance!

[TomerAberbach]

Thanks for reporting, this was an oversight on our end! We'll take care of it :)

[TomerAberbach]

This is fixed in v2.18.2 (publishing now)

[mrdziuban]

Thank you!