Expand report out for archive

[Obiwantje]

Please add a line that shows if romba added anything new to the current report out of the archive command

archive -only-needed '/lots_of_new_stuff' started archiving finished archive roms total number of files: 669 number of files processed: 669 number of files with errors: 0 total number of bytes: 556 MiB number of bytes processed: 556 MiB elapsed time: 8s throughput: 63 MiB/s eg: total number of new files created: xxx total number of new bytes added: yyyy