Feature: Limit the output of journalctl

By default, the entire output of journalctl is loaded.
Especially when a service is in a reboot loop that causes a massive journal, this becomes problematic.
Instead, the default should be to limit the output.
Those that need access to the entire output of a massive journalctl command and cannot see the main issue within the last 10_000 lines, will know what to do in that case.