Add CDBS snippet package-relations.mk.
Add CDBS snippet package-relations.mk.

tchx84/debian-pkg-sugar-artwork,tchx84/debian-pkg-sugar-base,tchx84/debian-pkg-sugar-toolkit,tchx84/debian-pkg-sugar-base,tchx84/debian-pkg-sugar-artwork,tchx84/debian-pkg-sugar-toolkit,tchx84/debian-pkg-sugar-toolkit,tchx84/debian-pkg-sugar-base,tchx84/debian-pkg-sugar-artwork