Automatically update the blocked IPs and blocked user agents

We need a way to automatically update the blocked IPs list and blocked user agents lists without doing it for every single request made.

We'd need to configure a storage medium for the IP addresses (database, json file etc).

Could also make a goroutine that runs every 1-2 mins and populates them from the medium

The issue names no files, tests, or entry points. Start by locating the middleware code that loads and checks blocked IPs and user agents, then define the storage and refresh behavior; done should mean automatic updates without work on every request.

Written by the indexing model from the issue text.