An option to only delete log entries that belong to a specific IP or CIDR

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### Prerequisites

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- [x] I am running the latest version (v0.107.0-b.4 from GitHub releases)
- [x] I checked the documentation and found no answer
- [x] I checked to make sure that this issue has not already been filed

### Problem Description

This is somewhat of a fringe plausible event that relies on 1) running a public AdGuard Home server, and 2) *not* having a "No logging" policy:

The possibility has struck me that someone who is an end-user of someone else's public AGH server, may plausibly wish to exercise the GDPR "Right to Forget" right. Currently, the only way to fulfill such a request, would be to delete AGH's entire log for all users, incl. those of the admin's household items.

### Proposed Solution

An option to only delete log entries that belong to a specific IP or CIDR.

### Alternatives Considered

None that I can think of, mostly I haven't thought about it all that much due to the rare chance of it happening.

### Additional Information

As far as I can determine, this is not a clone of #3140 nor #1717