[UI] Disable block domains for x amount of time

`Block domains using filters and hosts files` only able to toggle for enable and disable
However PiHole has option for disable certain period of time eg: 5min, 15min, 1hr, 5hr.

#1333
>@hoshsadiqJust noticed that Adguard was disabled for the past day or so because I had forgotten to re-enable it. It would be great to have an option in the UI as well.