Workspace startup order

### Description of the new feature / enhancement

I would like to see the "Workspace" feature allow me to customize the order in which apps open when opening multiple apps at once.

### Scenario when this would be used?

When launching a shortcut in the workspace.

### Supporting information

_No response_

Start by locating the Workspace implementation and the shortcut path that launches multiple apps. Determine how the current startup order is defined and where user-configurable ordering would belong. Done means a workspace shortcut opens its apps in the selected order, with the behavior covered by appropriate tests.

Written by the indexing model from the issue text.