Hello Sven, I created the repo on https://salsa.debian.org/pkg-security-team/arno-iptables-firewall and gave temporary permission for your account so you can work there until you are on the salsa team. I don't think I can add you on the salsa team, Raphaƫl or Gianfranco can confirm that, also, there should be a button to join the team on the wgui but I'm not familiar on where should it be, this can be solved later as you have access on the one I created now.
I will probably be able to review the package tomorrow after reviewing Aleksey's libpff. Thanks for your work -- Samuel Henrique <samueloph>