i15-1: show status icon on scan row

At the moment we're showing the status chip on each column row. Keep that.
When expanding the row to show the plans, we show an icon with the current plan status, which correlates to the above mentioned chip.
We should show that icon next to the name of the row.

We should also change the order of the columns so that expanding the row is next to the name and move the order number to the left of it.
This will also allow to show better indentation when opening the rows.

Start by locating the scan-row component and the existing plan-status icon, then inspect the table's column definitions. Done means the icon appears beside the row name, the expansion control is next to it, the order number is to its left, indentation improves when rows open, and the existing status chip remains.

Written by the indexing model from the issue text.