fix
debian/control: fix, the shared desktop package must not recommend whonix workstation default applications
debian/control: work on recommends/suggests fields
added buildconfig.d configuration folder
.gitignore: added buildconfig.d/
debian/rules: code intend
Extracted code for packaging Whonix in debian/rules and made a rules-helper.bsh script, which I can maintain better. Therefore also likely fixed the bug, that /etc/default/grub.whonix wasn't properly displaced.