Added Debian postinst to copy and activate udev rules

debian/postinst

@@ -20,6 +20,8 @@ set -e
 
 case "$1" in
     configure)
+        cd /opt/sdrangel/share/sdrangel/udev-rules
+        ./install.sh
     ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)