Corrected lxqt-archiver's mimetypes and added arqiver to archivers list
Corrected lxqt-archiver's mimetypes and added arqiver to archivers list

Closes https://github.com/lxqt/libfm-qt/issues/453 and closes https://github.com/lxqt/libfm-qt/issues/268

"application/gzip" and "application/vnd.debian.binary-package" were missing in lxqt-archiver mimetypes. Also Arqiver is added after lxqt-archiver because it works fine with libfm-qt.

lxde/libfm-qt,lxde/libfm-qt