imagewriter in kdereview

[Jonathan Riddell]

Please review imagewriter which I've just had moved to kdereview.

It's a simple tool to write ISO images to a USB key.  It should be
cross platform and work on Linux, mac, windows.

It's based on ROSA Image Writer and the ROSA maintainer has agreed to
maintain it in KDE.  Compared to ROSA I've switched to i18n and used
kauth and made the ROSA branding optional.

Scarlett has started making an AppImage for it although I don't know
if it'll work with KAuth
https://github.com/appimage-packages/imagewriter/issues/1

Jonathan