Multi day and multi hour appointments [Feature Request]

[RubenRuNN]

Multi-Hour Appointment View (Day View):

When viewing the planner in Day View, appointments that span multiple hours should visually extend across the corresponding time slots. For example, if an appointment starts at 1:00 AM and ends at 3:00 AM, it should be rendered to stretch from the 1:00 AM hour column through the 2:00 AM hour column, clearly indicating the entire duration of the appointment.

Multi-Day Appointment View (Week View):

In Week View, appointments that span across multiple days should be rendered similarly. If an appointment starts on Day 2 and ends on Day 3, it should be displayed across both days, extending the appointment visually from Day 2 to Day 3 to reflect the full timespan of the event.

Expected Behavior:

In Day View, appointments should expand across the corresponding hour columns, ensuring that both the start time and end time of the event are clearly reflected.

In Week View, appointments that start on one day and end on the next should extend across the corresponding day columns to reflect the multi-day duration.

Additional Considerations:

The visual rendering should clearly distinguish overlapping appointments, ensuring that users can still easily identify individual events, even if they overlap across multiple hours or days.
Support for edge cases such as appointments that span several hours or days should also be considered.