* graphql: add tx receiptsRLP field

* use MarshalBinary
Co-authored-by: Ryan Schneider <ryanleeschneider@gmail.com>

* update schema
Co-authored-by: Ryan Schneider <ryanleeschneider@gmail.com>

* rename to rawReceipt

* indent fix
Co-authored-by: Ryan Schneider <ryanleeschneider@gmail.com>