added iptables and nftables integration

plugins/iptables/krawl-iptables.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+# This script fetches a list of malicious IPs from your Krawl instance and adds them to the iptables firewall to block incoming traffic from those IPs.
+
+curl -s https://your-krawl-instance/api/get_banlist?fwtype=iptables | while read ip; do 
+  iptables -C INPUT -s "$ip" -j DROP || iptables -A INPUT -s "$ip" -j DROP; 
+done