Brings back api.exceptionHandlers.action for logging action errors with third-party error reporters

[evantahler]

Returns api.exceptionHandlers.action so that errors from actions can be passed to third-party error reporters. IE:

api.exceptionHandlers.reporters.push((error: Error) => {
  Sentry.captureException(error);
});

The actionProcessor still handles logging the action.

Related to https://github.com/actionhero/ah-sentry-plugin

[evantahler]

This was erroneously removed in #1505, as it does more than just handle writing to the console.