first commit -> move some files from one-api

vendor/bacon/bacon-qr-code/autoload_function.php

@@ -0,0 +1,12 @@
+<?php
+return function ($class) {
+    static $map;
+    if (!$map) {
+        $map = include __DIR__ . '/autoload_classmap.php';
+    }
+
+    if (!isset($map[$class])) {
+        return false;
+    }
+    return include $map[$class];
+};