/usr/lib/x86_64-linux-gnu/libzbargtk.so is in libzbargtk-dev 0.10+doc-10ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libzbargtk.so.0.0.2
/usr/lib/x86_64-linux-gnu/libzbargtk.so.0.0.2