Added new action and enhanced file reading:

• Added Create Directory action to create directories on an FTP server, with optional recursive creation of nested paths
• Added Return Buffer input to the Read File action to force application/octet-stream content type, useful for non-UTF-8 text files

Upgraded basic-ftp from 5.0.2 to 5.2.1 to patch CVE-2026-27699 (path traversal vulnerability, CVSS 9.1)

• Added New or Modified Files polling trigger that detects new and modified files in a directory on a configured schedule