Remove devices that no longer send requests

### 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

### Description

#### What problem are you trying to solve?
I had a few power outages and after the router booted, the ip addresses of the devices using AdGuard home changed I want the system to remove the old ip addresses
#### Proposed solution
Ping the devices that are using AdGuard home once an hour and remove the ones that don’t respond after 24 ping attempts (24 hours)
#### Alternatives considered
None
#### Additional information
Also there could be a setting that allows the user to specify the amount of time/ping attempts depending on how they want it configured