Debug packages for byzantium

this is the leftover from !427 (merged) for byzantium:

cat <<EOF > /etc/apt/sources.list.d/debug.list
deb https://repo.pureos.net/pureos-debug/ byzantium-debug main
deb https://repo.pureos.net/pureos-debug/ landing-debug main
deb http://debug.mirrors.debian.org/debian-debug/ bullseye-debug main
EOF

apt update

apt install systemd-coredump gdb calls-dbgsym libglib2.0-0-dbgsym libgtk-3-0-dbgsym phoc-dbgsym phosh-dbgsym```

(dropped chatty and squeeboard since they're outdated in byzantium)

Edited Dec 06, 2021 by Guido Gunther

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