Option to pin a task to the top of a list

Is your feature request related to a problem? Please describe.

I use the widget extensively for my day-to-day task list and it's a fantastic solution for my use case, for my needs I don't set due dates and just sort the list by newest task first. But sometimes I have a particularly important or otherwise relevant task that I need to remain at the top of the task list, even if I add new tasks after it, whilst still otherwise having the task list sorted by newest first.

Describe the solution you'd like

I would like to have the ability to pin tasks to the top of a list so that they remain at the top of the list regardless of the selected list sorting.

Describe alternatives you've considered

I have tried manual sorting, but this requires constantly moving tasks on the task list every time I add a new task.

The issue names no source files, tests, or entry points. Start by locating the task-list model and the code that applies list sorting; the work is done when a task can be pinned and remains above normally sorted tasks without disrupting the selected sort order.