apkg: install stdlib files in packages

distro/pkg/deb/algorithms-library-snapshot.install

 debian/tmp/usr/bin/aql2                                             /usr/bin/
+debian/tmp/usr/share/algorithms-library/                            /usr/share/
 debian/tmp/usr/lib/x86_64-linux-gnu/libalib2abstraction.so*         /usr/lib/x86_64-linux-gnu/
 debian/tmp/usr/lib/x86_64-linux-gnu/libalib2algo.so*                /usr/lib/x86_64-linux-gnu/
 debian/tmp/usr/lib/x86_64-linux-gnu/libalib2algo_experimental.so*   /usr/lib/x86_64-linux-gnu/

distro/pkg/deb/dirs

 usr/bin
 usr/lib
+usr/share

distro/pkg/rpm/algorithms-library-snapshot.spec

@@ -43,6 +43,7 @@ Development headers for algorithms-library-snapshot.
 %doc README.md
 %{_bindir}/aql2
 %{_libdir}/libalib*
+%{_datadir}/algorithms-library
 %files devel
 %{_includedir}/algorithms-library