either that or host a manifest file generated for you automatically from an archive hosted by you somewhere, and host that file anywhere you want, then anyone can use it with the -m option. I've someone did that but o haven't seen it. And yes, packs are just zip archives with any structure you want, it includes all files from the archive and you can then edit the manifest to remove the unnecessary files. It's automated as much as possible.
it boils down to running mix pleroma.emoji gen-pack <your-pack-url> and hosting the two output files somewhere. One command.
but I bet you're still gonna say something salty :^)