[Request] Periodic closure execution

[kirilltitov]

Like setInterval in JavaScript. This would be extremely handy in some cases (in my particular case I use this for server logic). The syntax could be smth like this:

every(.seconds(5), dispatchLevel: .userInteractive) { /* closure body */ }

(this is done, ofc, with DispatchSource.makeTimerSource.scheduleRepeating)

[Jeehut]

Sure, sounds good. Would you like to do a PR?

[kirilltitov]

Sneaky :) But I don't mind, there you go.

[Jeehut]

Closing this due to inactivity in #12.