add QueryRaw to graphql client

graphql/client.go

@@ -80,6 +80,21 @@ func (c *Client) Query(
 	return c.gql.Query(ctx, q, variables, options...)
 }
 
+func (c *Client) QueryRaw(
+	ctx context.Context,
+	q interface{},
+	variables interface{},
+	options ...graphql.Option,
+) ([]byte, error) {
+	err := c.rl.Wait(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "waiting for rate limit")
+	}
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	return c.gql.QueryRaw(ctx, q, variables, options...)
+}
+
 func (c *Client) Mutate(
 	ctx context.Context,
 	q interface{},