feature request: Add VTODO Support

[Federico-Baldan]

Checklist

• I checked that this feature has not been requested before
• I checked that this feature is not in the "wontfix / not planned" list
• This feature will benefit the majority of users

Problem Description / Use Case

Description:
Currently, BetterShift only supports VEVENT components when importing iCalendar files. It would be great to add support for VTODO components to handle tasks/to-do items.

Use Case:
Users who want to import tasks from other calendar applications (like Apple Reminders, Todoist, etc.) that export VTODO items.

Proposed Solution

No response