Refactor linkedListItemInsert to return pointer to pointer, and not save value

[Bnaya]

The linkedListItemInsert api accepts nodeValuePointer, and saves it.
A better api would be to simply return pointer to pointer and let the caller to do the actual write when he see fits

objectbuffer/src/internal/linkedList/linkedList.ts

Lines 45 to 60 in da30950

	export function linkedListItemInsert(
	carrier: GlobalCarrier,
	linkedListPointer: number,
	nodeValuePointer: number
	) {
	const { allocator, heap } = carrier;
	const newEndMarker = allocator.calloc(linkedListItem_size);
	linkedListItem_set_all(heap, newEndMarker, 0, 0);
	const wasEndMarker = linkedList_END_POINTER_get(heap, linkedListPointer);
	linkedList_END_POINTER_set(heap, linkedListPointer, newEndMarker);
	linkedListItem_set_all(heap, wasEndMarker, newEndMarker, nodeValuePointer);
	return wasEndMarker;
	}