feat: add error handling for ZFS pool creation in prepare-zfs-datasets script

prepare-zfs-datasets.sh

@@ -27,6 +27,12 @@ fi
 # Create ZFS pool
 sudo zpool create -f datapool "$device"
 
+# Check if this went well
+if [ $? -ne 0 ]; then
+  echo "Error creating ZFS pool. Exiting..."
+  exit 1
+fi
+
 # Create datasets with mountpoint=legacy
 datasets=(
   isos