Add AdGuard Ukrainian filter

### Prerequisites

Please answer the following questions for yourself before submitting an issue. **YOU MAY DELETE THE PREREQUISITES SECTION.**

- [x] I am running the latest version
- [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

New `AdGuard Ukrainian filter` is absent, because metadata cannot be updated by the app.

### Proposed Solution

Add it.