[LU-18932] TCU: "lfs trash" user commands

• Type: Technical task
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: WC Triage
• Reporter: Qian Yingjin

Description

Implement user commands for managing files in the trash.

• "lfs trash clean [--oldest \{_}AGE\{_}] [--user \{_}USER\{_}][\{_}DIR\{_}]" - immediately clean up files in Trash for the user older than AGE, in DIR if specified or current directory, otherwise all files/directories owned by USER or the current user
• "lfs trash unrm FILE|DIR" (alias "lfs unrm FILE|DIR") - to recover FILE or DIR from Trash,
• "lfs trash rmdir DIR" - move the entire directory tree DIR into trash, instead of deleting all of the files and subdirectories one-at-a-time