Add bin/harbormaster to make builds easier to debug

Summary:
Ref T1049. Adds `bin/harbormaster` and `bin/harbormaster build` for applying plans from the console. Since this gets `--trace`, it's much easier to debug what's going on.

This doesn't work properly with some of the Drydock steps yet, I need to look at those. I think `setRunAllTasksInProcess` probably obsoletes some of the mechanisms. It might also not work with "Wait for Builds" but I didn't check.

Test Plan: Used `bin/harbormaster` to run a bunch of builds. Ran builds from web UI.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1049

Differential Revision: https://secure.phabricator.com/D7825

scripts/setup/manage_harbormaster.php

@@ -0,0 +1,22 @@
+#!/usr/bin/env php
+<?php
+
+$root = dirname(dirname(dirname(__FILE__)));
+require_once $root.'/scripts/__init_script__.php';
+
+$args = new PhutilArgumentParser($argv);
+$args->setTagline('manage Harbormaster');
+$args->setSynopsis(<<<EOSYNOPSIS
+**harbormaster** __command__ [__options__]
+  Manage and debug Harbormaster.
+
+EOSYNOPSIS
+  );
+$args->parseStandardArguments();
+
+$workflows = id(new PhutilSymbolLoader())
+  ->setAncestorClass('HarbormasterManagementWorkflow')
+  ->loadObjects();
+$workflows[] = new PhutilHelpArgumentWorkflow();
+
+$args->parseWorkflows($workflows);