request headers - Robuta Search

https://fly.io/docs/networking/request-headers/

Documentation and guides from the team at Fly.io.

https://github.com/curl/curl/pull/20101

Also renamed the struct field to 'h1hdr' from 'scratch' to better say what its purpose is.

https://www.apollographql.com/docs/graphos/connectors/requests/headers

Set or forward headers when making HTTP requests with Connectors.