Feature Request: BCE dates

[apmireia]

Overview of the Feature Request
As mentioned in this discussion (https://groups.google.com/g/dataverse-community/c/Bj_dbHTeu2o/m/fFyyWfAsBAAJ), it would be interesting if Dataverse could support BCE (Before Common Era) dates. This functionality would greatly benefit datasets related to fields such as ancient history or archaeology.

What kind of user is the feature intended for?
API User, Curator, Depositor

What inspired the request?
We have several research centers that work with archaeological data.

What existing behavior do you want changed?
Allowing negative dates to be added, particularly in the 'time period covered' field, would be very useful.