Add HaGeZi NSFW blocklist to the AdGuard DNS blocklist catalog

### Prerequisites

- [x] The blocklist is created specifically for DNS-level blockers;
- [x] The blocklist is regularly updated (at least 10 updates per month);
- [x] The blocklist is known and popular;
- [x] The blocklist satisfies [the repo requirements](https://github.com/AdguardTeam/HostlistsRegistry#-what-blocklists-can-be-added-here);

### Blocklist name

HaGeZi's NSFW - Protects against adult content!

### Blocklist category

Other

### Homepage

https://raw.githubusercontent.com/hagezi/dns-blocklists/main/adblock/nsfw.txt

### Explanation

I would like to suggest adding the HaGeZi NSFW blocklist to the AdGuard DNS blocklist catalog.

### Blocklist

HaGeZi NSFW:
https://github.com/hagezi/dns-blocklists

AdGuard-compatible filter:
https://raw.githubusercontent.com/hagezi/dns-blocklists/main/adblock/nsfw.txt

### Why this list?

HaGeZi NSFW has a clear and specific purpose: blocking domains associated with adult/NSFW content.

This would be particularly useful for AdGuard DNS users who want to block adult content without enabling the full Parental Control feature, which may also enable additional restrictions such as Safe Search or YouTube Restricted Mode.

Having HaGeZi NSFW available as a native selectable blocklist would also avoid requiring users to add the list as a custom filter, which can be impractical because of the large number of rules and the limits on custom rules depending on the AdGuard DNS plan.

### Requirements

As far as I can tell, the list meets the stated blocklist criteria:

- Regularly maintained and updated.
- Actively maintained for well over 6 months.
- The HaGeZi project has significantly more than the required GitHub popularity threshold.
- Clear and specific purpose: NSFW/adult content blocking.
- Public GitHub repository with issues/discussions for feedback.
- Provides an AdGuard-compatible filter format.
- The list is already widely used and supported across DNS/ad-blocking solutions.

I believe adding it to the AdGuard DNS catalog would provide users with a useful, more granular alternative to enabling the complete parental-control feature.

Thank you for considering the request.