This blocks a bunch of AI scrapers from Forgejo, which seems to be
particularly attractive.
Especially meta-externalagent has been scraping very excessively.
The list comes from https://github.com/ai-robots-txt/ai.robots.txt,
let's see how often this needs updating.
Change-Id: I55ae7c42c6a3eeff6f0457411a8b05d55cb24f65
Reviewed-on: https://cl.snix.dev/c/snix/+/30370
Autosubmit: Florian Klink <flokli@flokli.de>
Tested-by: besadii
Reviewed-by: edef <edef@edef.eu>
