Timer which pause when human checker is running

[swanandx]

We use AtomicBool and channels to implement this hacky timer.
This is Work in Progress. TODOs:

• Get timeout duration from config
• Change return type to return an TimeOutError ??

[bee-san]

Also todo:

            recv(result_recv) -> exit_result => {
                 // if we find an element that matches our exit condition, return it!
                 // technically this won't check if the initial string matches our exit condition
                 // but this is a demo and i'll be lazy :P
                 let exit_result = exit_result.ok(); // convert Result to Some
                 if exit_result.is_some() {
                     trace!("Found exit result: {:?}", exit_result);
                     return exit_result;
                 }
             },
             recv(timer) -> _ => {
                 error!("TIMEOUT!!!");
                 return None;
             },