Library equivalent to Java's ManagedScheduledTask

[berler]

What happened?

For our java witchcraft services that use witchcraft-core (sadly cannot link here as this is internal) we have a library and builtin support for ManagedScheduledTasks. This makes it trivial to add background jobs to any (java) witchcraft service where you want some runtime config field to control that job frequency (or even disable it entirely). The library takes care of starting/stopping the job when witchcraft starts/stops and correctly updates the job frequency in response to live changes to the runtime config.

What did you want to happen?

Can we get a go version of this so that I don't need to implement this from scratch myself? Please see internal issue deployability/infra-projects issue 79 for more details.