feat: integrate with flysystem for xml data

composer.json

@@ -22,6 +22,8 @@
         "flagception/flagception-bundle": "^6.0",
         "knplabs/knp-menu-bundle": "^3.2",
         "knplabs/knp-paginator-bundle": "^6.2",
+        "league/flysystem-bundle": "^3.4",
+        "league/flysystem-sftp-v3": "^3.29",
         "liip/imagine-bundle": "^2.11",
         "maennchen/zipstream-php": "^3.1",
         "nelmio/security-bundle": "^3.0",