we don't need lammps_throw_error. just call lmp->error->xxx

src/library.h

@@ -312,6 +312,7 @@ void lammps_force_timeout(void *handle);
 
 int lammps_has_error(void *handle);
 int lammps_get_last_error_message(void *handle, char *buffer, int buf_size);
+void lammps_set_show_error(void *handle, const int flag);
 
 int lammps_python_api_version();