* switch to composer for qrcode and otp dependencies

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

vendor/thecodingmachine/safe/generated/Exceptions/InfoException.php

@@ -0,0 +1,11 @@
+<?php
+namespace Safe\Exceptions;
+
+class InfoException extends \ErrorException implements SafeExceptionInterface
+{
+    public static function createFromPhpError(): self
+    {
+        $error = error_get_last();
+        return new self($error['message'] ?? 'An error occured', 0, $error['type'] ?? 1);
+    }
+}