feat: Add systemd file and data to integrate the app as a daemon

data/etc/default/revpi-middleware

@@ -0,0 +1,8 @@
+# Additional options that are passed to revpi-middleware.
+#   add '-f /var/log/revpi-middleware.log' to write logs to own log file
+#   add '-v' or '-vv' for verbose logging
+
+DAEMON_OPTS=""
+
+# In addition to journalctl, use your own additional log file
+# DAEMON_OPTS="-f /var/log/revpi-middleware.log"

data/etc/logrotate/revpi-middleware

@@ -0,0 +1,14 @@
+/var/log/revpi-middleware.log
+{
+    rotate 6
+    weekly
+    maxsize 1M
+    compress
+    delaycompress
+    missingok
+    notifempty
+    sharedscripts
+    postrotate
+        systemctl kill --signal=SIGUSR1 revpi-middleware > /dev/null 2>&1 || true
+    endscript
+}