fix: jiggling around filepaths for phabricator

src/__phutil_library_init__.php

+<?php
+
+phutil_register_library('collabora-phabricator-extensions', __FILE__);

src/__phutil_library_map__.php

+<?php
+
+/**
+ * This file is automatically generated. Use 'arc liberate' to rebuild it.
+ *
+ * @generated
+ * @phutil-library-version 2
+ */
+phutil_register_library_map(array(
+  '__library_version__' => 2,
+  'class' => array(
+    'ManiphestCopyEverybodyMentionedAsSubcribersHeraldAction' => 'extensions/ManiphestCopyEverybodyMentionedAsSubcribersHeraldAction.php',
+  ),
+  'function' => array(),
+  'xmap' => array(),
+));