Add a bin/herald test ... for doing test runs via the CLI

Summary: Ref T13216. See D19666. It's currently tricky to profile Herald test runs since you have to submit a form and repeating them is a bit of a mess. Provide a simple CLI wrapper so we can use `--xprofile`. This is also maybe nice-to-have if we're ever debugging anything here.

Test Plan: Ran `bin/herald test --object ... --type ...` and got a sensible looking transcript in the UI.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13216

Differential Revision: https://secure.phabricator.com/D19806

scripts/setup/manage_herald.php

@@ -0,0 +1,21 @@
+#!/usr/bin/env php
+<?php
+
+$root = dirname(dirname(dirname(__FILE__)));
+require_once $root.'/scripts/init/init-script.php';
+
+$args = new PhutilArgumentParser($argv);
+$args->setTagline(pht('manage Herald'));
+$args->setSynopsis(<<<EOSYNOPSIS
+**herald** __command__ [__options__]
+  Manage and debug Herald.
+
+EOSYNOPSIS
+  );
+$args->parseStandardArguments();
+
+$workflows = id(new PhutilClassMapQuery())
+  ->setAncestorClass('HeraldManagementWorkflow')
+  ->execute();
+$workflows[] = new PhutilHelpArgumentWorkflow();
+$args->parseWorkflows($workflows);