Draft: first attemp of iter_bliss_scan_data_from_memory_slice

iter_bliss_scan_data_from_memory_slice is a copy of iter_bliss_scan_data_from_memory but only updates the buffer if the position (cursor) of the corresponding stream is between a slice range provided as attribute

For example, if we provide slice_range=[5,8], the iterator does not update the buffer until the scan is at point 5 and finishes the while loop after the point 8