Feature request: extract date format

[percevalw]

Feature type

New option / feature / span extension of eds.dates (@acalliger)

Description

It would be great if we could extract the date format like "September 5, 2012" -> "%d %B %Y", especially for downstream applications like pseudonymization to shift dates while keeping the same format.

Format codes: https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes