Adds safe-reboot and safe-shutdown, removes all .sh extensions to scripts

files/safe-shutdown

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -o errexit -o pipefail -o noclobber -o nounset -o errtrace -o functrace
+
+users=(arr gitea homeassistant immich jdownloader kiwix komga navidrome nextcloud nginx pairdrop paperless pihole qbittorrent synapse wallabag)
+for user in "${users[@]}"; do
+  readarray -t units <<< "$(systemctl --user -M "${user}@" list-units | grep container | grep running | grep service | awk '{print $1}')" || true
+  if [[ "${#units[@]}" -gt 0 && -n "${units[0]:-}" ]]; then
+    systemctl --user -M "${user}@" stop "${units[@]}"
+  fi
+done
+
+systemctl poweroff