Add copy op for II -> RAI

[etadobson]

Copy ops are currently homogenous. Would be nice to have a copy from II to RAI.

[etadobson]

private void copy(final IterableInterval<T> src, final RandomAccessibleInterval<T> dest)
{
  final Cursor<T> cursor = src.localizingCursor();
  final RandomAccess<T> access = dest.randomAccess();
  while (cursor.hasNext()) {
	final T value = cursor.next().copy();
	access.setPosition(cursor);
	access.get().set(value);
  }
}