Unit selection on the dashboard (hours vs. days)

### 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

When viewing the AGH dashboard, it's not clear whether the main 4 stats shown are for a hour, day, or total since enabling AGH.

Can this be added as it's not ideal that you have to search the web for an answer (which I still haven't found).

### Proposed solution

Some improvements, such as toggling between , Minutes, Hours, Days, Weeks, etc for the stats would be very helpful.

#6381 has some great suggestions and improvements too, but this request is for clarity when you glance at the dashboard page.

### Alternatives considered and additional information

_No response_