[Feat] Add widgets to display tasks on the device's home screen.

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**Is your feature request related to a problem? Please describe.**
Currently, users have to open the app to check their tasks, which can be inconvenient and time-consuming. By adding widgets to the device’s home screen, users can quickly view their upcoming tasks and manage their to-do list without opening the app, improving accessibility and usability.

**Describe the solution you'd like**
Integrate home screen widgets that allow users to view and interact with their tasks directly from their device’s home screen.
Task List Widget: Display a list of upcoming tasks, including task titles and due dates.
Interactive Widgets: Allow users to mark tasks as completed or delete tasks directly from the widget.

The issue names no files, tests, or entry points to start from. Clarify the supported device platforms and widget behavior, then verify that upcoming tasks show titles and due dates and that completion and deletion work from the home screen.

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