5. Create a python function "read samples(sequence, mer_length, read_count)" that returns a dictionary of randomly selected sequences from a genome. "sequence" is the reference genome, "mer_length" is desired sequence length, and "read_count" is the total header:read pairing that should be generated. The header should follow the encode sample number and sample position start, ex. "1155". The returned dictionary should contain object of the same type as sequence