FE: Reorder page groups

[Jondyr]

Arrow buttons for moving groups up and down.
Reuse component from page reordering?
Discussion around how this will be implemented on the backend is here #15031

Why

As a user I want a intuitive way to change the order of task groups. Instead of deleting a group and reacreate it in the desired position, which is inefficient and time consuming. Adding arrow buttons for reordering improves the user experience by making this process quick and straightforward.

Design