Be able to customize dashboard.

### Prerequisites

- [x] I have checked the [Wiki](https://github.com/AdguardTeam/AdGuardHome/wiki) and [Discussions](https://github.com/AdguardTeam/AdGuardHome/discussions) and found no answer

- [x] I have searched other issues and found no duplicates

- [x] I want to request a feature or enhancement and not ask a question

### The problem

No way to customize the dashboard.

### Proposed solution

Be able to select what to show.
Be able to move blocks to diff locked positions.
Blocks for example: Top upstreams, Top clients, DNS Queries.

### Alternatives considered and additional information

_No response_