Include a way to define php-resque event handler

[doshu]

nowadays there is no way to define the event handler for jobs failure.
php-resque have an event handler system that can bind some callable when an event was thrown

the events should be set in a file and included via APP_INCLUDE
APP_INCLUDE in cake-resque is defined when the worker is launched and there is no way to edit

it should be pretty if there was a way to define a startup function for every worker where initialize event system