/usr/lib/x86_64-linux-gnu/librgw.so is in librgw-dev 12.2.4-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/librgw.so.2
/usr/lib/x86_64-linux-gnu/librgw.so.2