Stream input of sql file when restoring backup. Makes everything better and faster

src/Service/BackupService.php

@@ -42,8 +42,10 @@ class BackupService
             $db,
         ]);
 
+        $stream = fopen($fileName, 'r');
+
         $process->setEnv(['MYSQL_PWD' => $this->credentials->getPassword()]);
-        $process->setInput(file_get_contents($fileName));
+        $process->setInput($stream);
         $process->run();
     }
 }