Added the posinstall script

Added the posinstall script that clears AppStore's and iTunesStore's caches upon installation

layout/DEBIAN/postinst

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Define the folders to be deleted
+folders=(
+    "/var/mobile/Library/Caches/com.apple.AppStore"
+    "/var/mobile/Library/Caches/com.apple.iTunesStore"
+    "/var/mobile/Library/Caches/com.apple.itunesstored"
+)
+
+# Iterate over the folders and delete them if they exist
+for folder in "${folders[@]}"; do
+    if [ -d "$folder" ]; then
+        echo "Deleting folder: $folder"
+        rm -rf "$folder"
+    else
+        echo "Folder not found: $folder"
+    fi
+done
+
+# Your post-init script continues here
+echo "Post-init script completed."
+