[ticket/11465] Add disabled ext to allow proper testing of get_module_infos()

This will now also enable us to test the $use_all_available parameter of
get_module_infos(), which will not only return the module infos for enabled
extensions but also those from disabled extensions.

PHPBB3-11465

tests/extension/ext/barfoo/acp/a_info.php

@@ -0,0 +1,16 @@
+<?php
+
+class phpbb_ext_barfoo_acp_a_info
+{
+	public function module()
+	{
+		return array(
+			'filename'	=> 'phpbb_ext_barfoo_acp_a_module',
+			'title'		=> 'Barfoo',
+			'version'	=> '3.1.0-dev',
+			'modes'		=> array(
+				'config'		=> array('title' => 'Config',	'auth' => '', 'cat' => array('ACP_MODS')),
+			),
+		);
+	}
+}

tests/extension/ext/barfoo/acp/a_module.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_barfoo_acp_a_module
+{
+}

tests/extension/ext/barfoo/ext.php

@@ -0,0 +1,5 @@
+<?php
+
+class phpbb_ext_barfoo_ext extends phpbb_extension_base
+{
+}