Translates all 404 strings in systemd/lang/en into Turkish. The module
had no Turkish translation and no tr.auto file.
systemd terminology is kept recognisable: command names (systemctl,
journalctl, loginctl), section names ([Install]), unit suffixes (.mount)
and the concept name "linger" are left in English, while unit types are
translated (service/timer/socket/path/target/mount/swap/slice/scope).
