BE: Create tables to support Status widget

Create tables to support status widget.

~~Tables Schema - #477863 (closed) ~~

Spike Issue - #477863 (closed)

It's effectively only the table for the join model WorkItems::Statuses::CurrentStatus which is completely available in the POC.

Leave out the custom status part for now, we'll handle it in iteration 2.

Edited by Marc Saleiko