* switch to composer for qrcode and otp dependencies

* move most OTP-related stuff into userhelper
* remove old phpqrcode and otphp libraries

vendor/thecodingmachine/safe/lib/Exceptions/CurlException.php

@@ -0,0 +1,15 @@
+<?php
+
+
+namespace Safe\Exceptions;
+
+class CurlException extends \Exception implements SafeExceptionInterface
+{
+    /**
+     * @param resource $ch
+     */
+    public static function createFromCurlResource($ch): self
+    {
+        return new self(\curl_error($ch), \curl_errno($ch));
+    }
+}