Items: Make datatables paginated

[SchoolGuy]

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

As a user
I want to have paginated datatables
so that I don't have to wait for all items to load.

Describe the solution you'd like

Add pagination to the datatables to make navigation in the UI easier with a lot of items.

Describe alternatives you've considered

None.

Additional context

The API exposes a method called find_items_paged. This sadly doesn't help much. The backend offers parameters for paging but sadly they are unused. As such all items have to be loaded by the backend. From this follows that this is an interface-only change.