How to add new calender (Jalali,Persian)

Hi everybody i need to know how can i add Jalali (Persian,Shamsi) calender to my Dolibarr ?
also i have a JavaScript library Jalali, but how can i add this calender add to dolibarr
before, many user asked this question in forum but lastest answer about 10Years ago!
plz help me

Kind regards
Sepehr