Render multi-day events as all-day events

[gsacre]

Is your feature request related to a problem? Please describe.

There is another closed feature request about this (#2672) but I would like to explain the reason why I would need this.

I self-host most of my data (and enormous thank you to Nextcloud for that) and I automate lots of aspects of my life. I use Nextcloud calendar to automate things in my Home Assistant, on my mobile... based on, among other things, whether or not I have my kids, which is captured in a said Nextcloud calendar. So the custody starts at a given time and spans over several days (to end at a given time). I'd like to keep the start and stop time for all my automation scripts. So "all day" event is not the best option for me.

However, when I want to visually check whether or not I have my kids to book appointments, it's not visually appealing to have those spanning over all the lines of the calendar, so much that I keep this calendar not displayed most of the time.

Describe the solution you'd like

I would like to have an option to display calendar events which span over more than 24 hours as "all day" events, on the top of the calendar.

Describe alternatives you've considered

Change quite a significant amount of working scripts in Home Assistant, Tasker...

Additional context

Thank you for your consideration and time!