#1 nftables

Hi, I really believe you should consider adding the nftables to this as it json (DEFINE) is so much faster than any of it's an-sisters... and for those distro's that still do a iptable=>nftable transition are adding a significant unneeded load to any system. https://notabug.org/dfca/DFCA/src/main/DFCA_INSTALL_INSTRUCTIONS_0.2.0_%28extracted-for-convenience%29.txt#L163-L171