feat: Native CCSS Feature - Misc Extras

[kgar]

Non-Functional Specs

• When dragging an owned item over a custom section other than the item's current section, the section should be highlighted to indicate that the item is to be transferred to the section.

Utility Toolbar / Configuration

• Allow for import/export of section configuration. When this is done, all sections are considered "Added by the User" instead of "Derived by Items".

Item Tables

• When sections are hidden, provide an optional toggle at the bottom of the tab's item sections which allows for viewing the sections that are intentionally hidden.