localizeNumber
This function localizes String to either English or Nepali, i.e. converts english numbers of string to nepali numbers, and vice versa.
Return
String with English numbers converted to Nepali numbers, or vice versa.
Parameters
locale
takes value from NepaliDatePickerLang i.e. NepaliDatePickerLang.ENGLISH or NepaliDatePickerLang.NEPALI