Add syncthing port to batman script

src/freedombone-mesh-batman

 
 ZERONET_PORT=15441
 IPFS_PORT=4001
+SYNCTHING_PORT=22000
 
 # Ethernet bridge definition (bridged to bat0)
 BRIDGE=br-mesh
     iptables -D INPUT -p tcp --dport $ZERONET_PORT -j ACCEPT
     iptables -D INPUT -p udp --dport $ZERONET_PORT -j ACCEPT
     iptables -D INPUT -p tcp --dport $IPFS_PORT -j ACCEPT
+    iptables -D INPUT -p udp --dport $SYNCTHING_PORT -j ACCEPT
+    iptables -D INPUT -p tcp --dport $SYNCTHING_PORT -j ACCEPT
 
     systemctl restart network-manager
 }