feat: add micro serial forward

Co-authored-by: Cristian Maglie <c.maglie@arduino.cc>

Author: lucarin91

debian/arduino-router/DEBIAN/control

@@ -3,5 +3,5 @@ Version: $VERSION
 Architecture: $ARCH
 Maintainer: arduino <support@arduino.cc>
 Description: Arduino application router
-Depends:
+Depends: socat
 

debian/arduino-router/DEBIAN/postinst

@@ -1,3 +1,13 @@
 #!/bin/sh
 
+if [ -d /run/systemd/system ]; then
+  systemctl daemon-reload
+fi
+
 systemctl enable arduino-router
+systemctl enable arduino-router-serial
+
+if [ -d /run/systemd/system ]; then
+  systemctl start arduino-router
+  systemctl start arduino-router-serial
+fi

debian/arduino-router/DEBIAN/prerm

@@ -1,3 +1,9 @@
 #!/bin/sh
 
 systemctl disable arduino-router
+systemctl disable arduino-router-serial
+
+if [ -d /run/systemd/system ]; then
+  systemctl stop arduino-router
+  systemctl stop arduino-router-serial
+fi

debian/arduino-router/etc/systemd/system/arduino-router-serial.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=Proxy for the Arduino Router Monitor to ttyGS0 serial
+After=network-online.target arduino-router.service
+Wants=network-online.target arduino-router.service
+Requires=arduino-router.service
+
+[Service]
+ExecStart=/usr/bin/socat file:/dev/ttyGS0,raw,echo=0,b9600,crtscts=0 tcp:127.0.0.1:7500
+StandardOutput=journal
+StandardError=journal
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=multi-user.target