feat: Interactive evaluation mode with comprehensive CLI

[Chibionos]

Summary

Adds interactive mode for evaluations with keyboard-driven navigation and management.

Features

• Arrow key navigation through eval sets and evaluators
• Create eval sets interactively with wizard
• Create evaluators interactively
• Drill-down views for detailed inspection
• Backspace navigation to return to previous menus
• Auto-discovery from evaluationSets/ and evaluators/ folders
• Clean folder structure with backward compatibility

Commands

• uipath eval --interactive: Launch interactive mode
• Supports all existing eval commands in new folder structure

Technical Changes

• New file: src/uipath/_cli/_eval_interactive.py
• Updated: src/uipath/_cli/_utils/_eval_set.py for folder structure
• Folder structure: evaluationSets/ and evaluators/