banIP support thread

@AcidSlide it is possible to contribute, and while LuCI and javascript is something i have less exposure to than NFT ipsets and nftables.

@dibdot I do believe my contribution with some cleaning can help towards fully functioal banIP.

Tried moving it here:

And while I strongly believe these things are essential as soon as a firewall is even possible, interest is low compared to media, storage and wireless.