Make listBuildSettings work for "target-type" and targetType none packages.
Make listBuildSettings work for "target-type" and targetType none packages.

gedaiu/dub,Flamaros/dub,grogancolin/dub,p0nce/dub,rjframe/dub,jelmansouri/dub,D-Programming-Language/dub,jeanbaptistelab/dub,Geod24/dub