feat: Add some commands for object storage

[freedom3219]

Description

Expand Storify's command similar to HDFS file viewing commands.

Support Commands

• Grep (grep): Search for patterns in path
  • storify grep -R "pattern" path/
• Find (find): Find for patterns in path
  • storify find path/
• Tree (tree): View directory structure
  • storify tree path/
• Diff (diff): View the differences between the two files
  • storify diff file1 file2
• Touch (touch): Create a new file
  • storify touch path/newfile
• Truncate (truncate): Truncate the file
  • storify truncate path/file
• Append (append): Append the file
  • storify append path/file

Implementation Notes

• All operations should work across OSS, S3, MinIO, and filesystem providers
• Maintain existing code structure and error handling patterns
• Support both line-based and byte-based operations
• Add appropriate CLI arguments and help text
• Implement proper error handling for non-existent files and permission issues