feat(tokens): new backgroundDropZone

[AnaMontes11]

New tokens added:

"backgroundDropZoneHover",
"backgroundDragOver",
"backgroundDropZoneHoverBrand",
"backgroundDropZoneDragOverBrand",

[aweell]

In order to avoid confusion about DragOver since is used here and also when a color is over a specific context (OverBrand), I would use dragover as a single word.

So an example could be:backgroundContainerDragover

https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dragover_event

[AnaMontes11]

In order to avoid confusion about DragOver since is used here and also when a color is over a specific context (OverBrand), I would use dragover as a single word.

So an example could be:backgroundContainerDragover

https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dragover_event

Sure, changed!