feat: Enable consumers to access the full response payload

create end user public api in the response object called full_response,
this is non breaking and additive feature that should not need to
change.

Propergating it from internal class with @last_response attribute, we
can change this to be in the return object of execute, but i would need
to know all the places that i need to change.

lib/graphql/client.rb

@@ -385,7 +385,8 @@ def query(definition, variables: {}, context: {})
         result,
         data: definition.new(data, Errors.new(errors, ["data"])),
         errors: Errors.new(errors),
-        extensions: extensions
+        extensions:,
+        full_response: execute.last_response
       )
     end
 

lib/graphql/client/http.rb

@@ -45,6 +45,11 @@ def headers(_context)
         {}
       end
 
+      # Public: full reponse from last request
+      #
+      # Returns Hash.
+      attr_reader :last_response
+
       # Public: Make an HTTP request for GraphQL query.
       #
       # Implements Client's "execute" adapter interface.
@@ -71,6 +76,7 @@ def execute(document:, operation_name: nil, variables: {}, context: {})
         request.body = JSON.generate(body)
 
         response = connection.request(request)
+        @last_response = response.to_hash
         case response
         when Net::HTTPOK, Net::HTTPBadRequest
           JSON.parse(response.body)

lib/graphql/client/response.rb

@@ -31,12 +31,18 @@ class Response
       # Public: Hash of server specific extension metadata.
       attr_reader :extensions
 
+      # Public: Complete response hash returned from server.
+      #
+      # Returns Hash
+      attr_reader :full_response
+
       # Internal: Initialize base class.
-      def initialize(hash, data: nil, errors: Errors.new, extensions: {})
+      def initialize(hash, data: nil, errors: Errors.new, extensions: {}, full_response: nil)
         @original_hash = hash
         @data = data
         @errors = errors
         @extensions = extensions
+        @full_response = full_response
       end
     end
   end