Auto-generate op builder with TableGen

If no custom builder is supplied for an op, TableGen now generates
a default builder for it with the following signature:

  static void build(Builder *builder, OperationState* result,
                    <list-of-all-result-types>,
                    <list-of-all-operands>,
                    <list-of-all-attributes>);

PiperOrigin-RevId: 224382473