Add: Blocking on app usage time

[Theoyor]

Hi,

I would greatly appreciate a feature which only blocks selected apps after they have been used for a certain amount during a day. It should then be possible to set different usage times for each app. Or make timing groups and assign apps to those groups.

Thanks for the great work so far!

[nethical6]

@Theoyor 👌 yea I'm already thinking about allowing the creation of profiles