feat(geoblocking): geo ip management in threat shield ip

[m-dilorenzi]

This PR contains the implementation of the Geo IP blocking feature in the Threat Shield IP firewall section.
Using this feature allows users to block inbound and outbound connections from specific countries.
Two new APIs, geoblocking-configuration and set-geoblocking-configuration, have been implemented to allow the UI to retrieve and update the current BanIP configuration for blocked countries.
Each country is categorized using a JSON map that assigns it to the corresponding region (Africa, Oceania, Europe, etc.), which is then shown in the UI.
The geoblocking-configuration API returns the state of the Geo IP service (enabled/disabled) and the list of selectable countries, divided by region and indicating whether each one is blocked.
The set-geoblocking-configuration API receives the Geo IP service state (enabled/disabled) and the list of blocked countries.
When the service configuration is modified, the backup files /tmp/banIP-backup/banIP.countryv4.gz and /tmp/banIP-backup/banIP.countryv6.gz are deleted if present. This is necessary because, when the list of blocked countries is changed, banIP uses the IP lists stored in these two backup files, which may contain more or fewer IP addresses than desired.

Closes: #1586

[Tbaile]

Just a minor leftover, otherwise we good for the backend