Add date or timestamp to the backup filename

[codeinabox]

Would it be possible to add the date or timestamp to the backup filename? eg dailydozen_back_24012023.json

I save my backup to SyncThing and it errors if the filename already exists, so it would be very handy if each new backup has a unique filename.

[marc-medley]

@slavick As FYI, the iPhone app is currently setup for filename with a format of "DailyDozen_yyyyMMdd_HHmmss.extension". The yyyyMMdd date format allows for a most-significant-value sort order (year month day), e.g 20221101, 20221224, 20230124, …, etc. A name fragment such as _back is not used since this seems redundant with having the timestamp.