A new PSR-14 event is added that allows to modify the event right before
it is persisted within Destination Data One import.
This for example allows to alter dates, prices, etc.
Improve handling of missing end time in dates.
A new TypoScript option upcoming is added.
The option can be set to 0 (default) or 1.
0 behaves the same way as in the past.
1 turns off the option useMidnight, start and end.
Only dates with a start date in the future will be shown.
Relates: #10507
