Moves ListView item manipulation functions (`Update-ListViewPriorities`, `Move-ListViewItemTop`, `Move-ListViewItemUp`, `Move-ListViewItemDown`, `Move-ListViewItemBottom`) from the `FFUUI.Core.Applications` module to the `FFUUI.Core.Shared` module.
This improves code organization and reusability by centralizing common UI helper logic.
Moves ListView manipulation, BYO application import/export, and copy task logic from the main UI script and core UI module into a new `FFUUI.Core.Applications` module.
This improves code organization and modularity for application-related features.