Multiple intervals within the same weekday in blocked services schedule

### 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

Id' like to suspend a blocked service more times the same day.

Example: from 8:00 to 14:00 and from 20:00 to 23:59.

### Proposed solution

Add one more interval both on global blocked services and on per client blocked services after adding a new client.

### Alternatives considered and additional information

_No response_