Investigate custom sorting with a list

[alanvardy]

From original comment:

I think this sorting works well but is non-intuitive in that it sorts based on total weight, not in a consistent order.

I have had tasks that meet multiple of these and figuring out how to sort consistently can be a pain.

I would prefer to sort based on a simple list-based comparator, so rather than assigning points to each item, you simply list the order you would like the sort to happen, for example:
example:
now, priority (asc), due (asc), date (asc), title (alphabetical ascending)

Basically just be able to provide a list and then it custom sorts on that.

Down the road something I can look at :)

Originally posted by @stacksjb in #804 (comment)