Show multiday events for every day in agenda

[HelmutL]

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
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• This issue contains only one feature request.
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Feature description

I would like a multiday event to be shown for every day of the event (not just the first one) in the agenda

Why do you want this feature?

This is important for "longer" events like vacation, journeys etc. It enables to know if there is "free time" quickly, no need to check the weekly / monthly display or scrolling back the agenda if something could interfere.
At best, taking an example of 10 days vacation, it would indicate 1 of 10, 2 of 10, 3 of 10 etc.

Additional information

Whit it could look like:

[Aga-C]

It's related to #110. I think these two should be done at once, despite being about two different places.

[joshtriplett]

I ran into this as well, when trying to switch from Google Calendar to Fossify Calendar.

Google Calendar displays multiday events like "event (Day 1/3)", "event (Day 2/3)", "event (Day 3/3)". In particular, that ensures the event is always visible when looking at events for the day.