Build a component that allows transferring items between two lists.
Requirements
There are two lists each initially containing 4 items.
Each item has a checkbox that can be checked/unchecked.
Transferring
Clicking on the double arrow buttons will transfer all items from one list to the other, as specified by the direction of the arrows.
Clicking on the single arrow buttons will transfer only the selected items, as specified by the direction of the arrows.
Transferred items are added to the bottom of the destination list.
Item selection (checked) states are preserved after transferring.
Buttons are disabled if there are no relevant items to be transferred.
Pair every checkbox with its item label. Give each arrow button a descriptive accessible name, hide the arrow glyph from assistive technology, and ensure all actions work from the keyboard.
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