libfsobasics: fix types namespace and add Pair<T1,T2>
libfsobasics: fix types namespace and add Pair<T1,T2>

slyon/debian-fso-usaged,slyon/debian-fso-deviced,slyon/debian-libfsoframework,slyon/debian-fso-usaged,slyon/debian-fso-deviced,slyon/debian-libfsoframework