[Feature Request]: Add transfer bank to all degree plans and make it a droppable

[akevinge]

1. Add transfer bank to all degree plans
2. Make each transfer bank modifiable and a droppable region
   b) Make the region droppable (see link below on how we make droppable components)
   c) Add handlers to SemesterContext to handle updates to the transfer bank
   d) Create a new endpoint that allows the transfer bank to be modified. See plan.ts

• Dnd-kit documentation on droppable regions
• How we made each semester a droppable region:

  planner/src/components/planner/Tiles/SemesterTile.tsx

  Lines 202 to 221 in 496ae51

  	const DroppableSemesterTile: FC<DroppableSemesterTileProps> = ({
  	dropId,
  	semester,
  	getSemesterCourseDragId,
  	...props
  	}) => {
  	const { setNodeRef } = useDroppable({
  	id: dropId,
  	data: { to: 'semester-tile', semester } as DragDataToSemesterTile,
  	});
  	return (
  	<SemesterTile
  	ref={setNodeRef}
  	semester={semester}
  	getDragId={getSemesterCourseDragId}
  	{...props}
  	/>
  	);
  	};

• Transfer bank component: https://github.com/UTDNebula/planner/blob/develop/src/components/planner/TransferBank.tsx#L1-L42
• Component that wraps entire tool: https://github.com/UTDNebula/planner/blob/develop/src/components/planner/Planner.tsx

[Mariptime]

I forgot to comment on this, but i took this issue on the planner meeting 9/17