[FEATURE] Expose underlying HTTP response

[hjoseph96]

Describe the bug
I am looking for rate limiting headers in the graphql response -- but I only get back the response body.

These are the headers: https://anilist.gitbook.io/anilist-apiv2-docs/overview/rate-limiting

Am I missing something?

To Reproduce

response = @client.query @page_query, { page: 1, perPage: 100 }

Expected behavior
I expect the response to have access to the headers from the request.

Screenshots
If applicable, add screenshots to help explain your problem.

[dblock]

We should expose the underlying response. Feel free to contribute!