Add standalone autoloader

Author: schmengler

autoload.php

@@ -0,0 +1,23 @@
+<?php
+declare(strict_types=1);
+/*
+ * Include this file to use the recipe without composer autoloader (e.g. when running deployer as phar)
+ *
+ * Implementation based on https://www.php-fig.org/psr/psr-4/examples/
+ */
+
+spl_autoload_register(function ($class) {
+
+    $prefix = 'IntegerNet\\DeployerTimer\\';
+    $base_dir = __DIR__ . '/src/';
+
+    $len = strlen($prefix);
+    if (strncmp($prefix, $class, $len) !== 0) {
+        return;
+    }
+    $relative_class = substr($class, $len);
+    $file = $base_dir . str_replace('\\', '/', $relative_class) . '.php';
+    if (file_exists($file)) {
+        require $file;
+    }
+});