added testing script for checking debian version

debian/version-check-testing.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+read -d . VERSION < /etc/debian_version
+
+if [ $VERSION -eq 11 ];
+    then 
+        echo "Bullseye"
+elif [ $VERSION -eq 12 ];
+    then
+        echo "Bookworm"
+elif [ $VERSION -eq 13 ];
+    then
+        echo "Trixie"
+else
+    echo "unknown version"
+fi