added systemd files

systemd/hauptbahnhof-module@.service

+[Unit]
+Description=Hauptbahnhof %i-Module
+After=network.target
+Before=hauptbahnhof.service
+
+[Service]
+Type=simple
+User=johannes
+WorkingDirectory=/usr/local/bin/hauptbahnhof
+ExecStart=/usr/local/bin/hauptbahnhof/venv/bin/python3 -m %i
+
+
+[Install]
+WantedBy=multi-user.target

systemd/hauptbahnhof.target

+[Unit]
+Description=Hauptbahnhof Hackerspace Control System
+
+[Install]
+WantedBy=multi-user.target
\ No newline at end of file

systemd/hauptbahnhof.target.wants/hauptbahnhof-module@babel.service

+../hauptbahnhof-module@.service
\ No newline at end of file

systemd/hauptbahnhof.target.wants/hauptbahnhof-module@hackerman.service

+../hauptbahnhof-module@.service
\ No newline at end of file

systemd/hauptbahnhof.target.wants/hauptbahnhof-module@mpd.service

+../hauptbahnhof-module@.service
\ No newline at end of file

systemd/hauptbahnhof.target.wants/hauptbahnhof-module@nsa.service

+../hauptbahnhof-module@.service
\ No newline at end of file

systemd/hauptbahnhof.target.wants/hauptbahnhof-module@rupprecht.service

+../hauptbahnhof-module@.service
\ No newline at end of file