macro_china_money_supply and macro_china_lpr are no-arg tables whose
dates are not ISO: 月份 is Chinese ('2026年08月份') and TRADE_DATE is a
date object. Added a _norm hook to _AkshareBase (used by extract_value
and extract_series) so adapters can normalize their own date axis, and
split the macro adapters into _NoArgSeriesAdapter + three shapes:
JIN10 (日期/今值), month-stat (月份), trade-date (TRADE_DATE).