feat: add Golden Ticket functionality and dual-mode operation

- Add Kubernetes mode with Golden Ticket attacks (certificate/token forgery)
- Implement golden subcommands: user-cert, node-cert, sa-token, update-uid, uid-list, test
- Add command mode separation (kubelet vs kubernetes mode)
- Commands are now filtered by current mode
- Update help system to show mode-specific commands
- Update prompt to show mode, IP and port
- Update banner for new tool name and mode display
- Update README with Golden Ticket documentation

Co-authored-by: PastKinopio <125463022+kinopio1101@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>

Author: kinokopio

.gitignore

@@ -39,4 +39,5 @@ Thumbs.db
 # Config files (optional, uncomment if needed)
 # config.yaml
 
-doc
+doc
+key