Notification action buttons

[nvllz]

Is your feature request related to a problem? Please describe.
To mark the todo item we're notified about as done, we currently have to go into the application and manually search for that specific item.

Describe the solution you'd like
I'd like the notification to show an action button (like "mark as completed" or "done") so I can easily mark this particular task as done without having to enter the app.

Additional context
In addition, you could consider some kind of "snooze" action that would dismiss the notification and send it again after the time specified in the settings.

[nvllz]

Additionally, notifications for tasks with the highest priority could be made non-dismissible (sticky) from the notification bar, either by default or configurable through a setting.