Adding tag script

Author: floriankraemer

scripts/tag.sh

@@ -0,0 +1,10 @@
+# Get the latest tag reachable from the previous commit
+TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null)
+
+if [ -n "$TAG" ]; then
+  sed -i "s/public const VERSION = .*/public const VERSION = '$TAG';/" src/Application.php
+  git add src/Application.php
+  echo "Version set to $TAG"
+else
+  echo "No previous tag found."
+fi