first commit -> move some files from one-api

vendor/aws_sdk/GuzzleHttp/Promise/AggregateException.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace GuzzleHttp\Promise;
+
+/**
+ * Exception thrown when too many errors occur in the some() or any() methods.
+ */
+class AggregateException extends RejectionException
+{
+    public function __construct(string $msg, array $reasons)
+    {
+        parent::__construct(
+            $reasons,
+            sprintf('%s; %d rejected promises', $msg, count($reasons))
+        );
+    }
+}