Port Modules/OAM/oam-librenms.sh.
Deploys the check_mk agent and systemd socket for LibreNMS monitoring,
along with the local plugins: distro, dmi, dpkg, ntp-client,
os-updates, postfixdetailed, and postfix-queues.
🤖 Generated with [Crush](https://github.com/charmassociates/crush)
Assisted-by: GLM-5 via Crush <crush@charm.land>
