message: Add formal charge option to atom site
diff: @@ -45,6 +45,7 @@ export async function getMolModels(mol: MolFile, format: ModelFormat<any> | unde
  type_symbol,
  pdbx_PDB_model_num: Column.ofConst(1, atoms.count, Column.Schema.int),
  + pdbx_formal_charge: Column.range(-1, 1)
  }, atoms.count);
  const entityBuilder = new EntityBuilder();
  