Consider adding folder in the root of product download archives
At https://gitlab.eclipse.org/eclipse/escet/escet/-/merge_requests/73#note_10795, @ahofkamp noted:
> Unpacking the archive will splash its contents all over the place, since the archive doesn't start with a directory prefix [...]
and
>In case the 'splash' is not clear, this is what I got after unpacking:
>
>```shell
>$ ls -F
>artifacts.xml bin/ configuration/ eclipse* eclipse.ini features/ license.html p2/ plugins/ readme/
>```
>
>(the trailing `/` are from the `-F` option)
>
>Now if you didn't unpack in a fresh empty directory, but in your average `Downloads` destination directory with a few hundred files and directories, the user will never find the unpacked files again. So please archive a `eclipse-escet-incubation-ide-0.2.0.20210517-171328-linux.gtk.x86_64` directory rather than `*`.
issue