added an installer

installer.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+
+mkdir $HOME/.local/bin/webcam-barcode -p
+cp -r scan.sh beep.mp3 $HOME/.local/bin/webcam-barcode/
+touch $HOME/.config/systemd/user/webcam-barcode.service
+
+
+echo "[Unit]
+Description=Barcode Reader Service
+
+[Service]
+ExecStart=$HOME/.local/bin/webcam-barcode/scan.sh
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=default.target
+" > HOME/.config/systemd/user/webcam-barcode.service
+
+systemctl --user daemon-reload
+systemctl --user enable --now webcam-barcode.service
+