pub fn offical_stocks(set: &mut StockList) -> Result<SHSZ>
获取上证和深证的股票代码
数量如下:SHSZ { sh1: 1646, sh8: 407, sz: 2745, } -> 4798
见 tests-integration::fetch_code::offical_stocks 测试
tests-integration::fetch_code::offical_stocks