Package it up for OpenWrt

[brainstorm]

As mentioned in https://forum.openwrt.org/t/adblock-lean-set-up-adblock-using-dnsmasq-blocklist/157076/1164, before it gets lost among good feature requests like those in #59 :)

[lynxthecat]

Are you volunteering?

[brainstorm]

Are you volunteering?

I... might not be the best dev for that, i.e couldn't get this one over the finishing line: openwrt/packages#8264

OTOH, you know your own software way better than I do? :-S

[lynxthecat]

Looks painful.

[friendly-bits]

I got it through for geoip-shell. It was not easy but mainly due to my inexperience with git.

So probably we will eventually do this, but there are some milestones to reach before that:

1. Implement a proper versioning system (which we should do anyway, it's kinda important for almost any software)
2. Get the project to a fairly steady state where no ultra rapid development happens very frequently. We're not very far away from that point IMO.