MDL-78511 lib: Include aws-sdk library

Include AWS SDK for PHP library.
This library is used in SMS factor from MFA project

lib/aws-sdk/src/DoctrineCacheAdapter.php

@@ -0,0 +1,55 @@
+<?php
+namespace Aws;
+
+use Doctrine\Common\Cache\Cache;
+
+class DoctrineCacheAdapter implements CacheInterface, Cache
+{
+    /** @var Cache */
+    private $cache;
+
+    public function __construct(Cache $cache)
+    {
+        $this->cache = $cache;
+    }
+
+    public function get($key)
+    {
+        return $this->cache->fetch($key);
+    }
+
+    public function fetch($key)
+    {
+        return $this->get($key);
+    }
+
+    public function set($key, $value, $ttl = 0)
+    {
+        return $this->cache->save($key, $value, $ttl);
+    }
+
+    public function save($key, $value, $ttl = 0)
+    {
+        return $this->set($key, $value, $ttl);
+    }
+
+    public function remove($key)
+    {
+        return $this->cache->delete($key);
+    }
+
+    public function delete($key)
+    {
+        return $this->remove($key);
+    }
+
+    public function contains($key)
+    {
+        return $this->cache->contains($key);
+    }
+
+    public function getStats()
+    {
+        return $this->cache->getStats();
+    }
+}