feat: move image cleanup function inside gitops router

.bin/clean_dangling_images.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-# Get list of image IDs with <none> tag (dangling images)
-dangling_images=$(podman images -f "dangling=true" -q)
-
-if [ -z "$dangling_images" ]; then
-  echo "✅ No dangling images to remove."
-else
-  echo "⚠️ Removing dangling images..."
-  echo "$dangling_images" | xargs podman rmi -f
-  echo "🧹 Done!"
-fi