feat: implement /init command for project documentation generation

[roomote]

This PR implements the /init command as requested in issue #6153. The command scans the entire codebase and generates a comprehensive ROO.md file with project documentation.

Changes Made

• Added /init command handler in Task.ts that intercepts the command before task creation

• Created ProjectScanner module that analyzes:

  • Project structure and file statistics
  • Technologies and frameworks used
  • Configuration files
  • Dependencies (production and development)
  • Available scripts
  • Git information
  • Architecture patterns

• Created DocumentationGenerator module that generates a well-formatted ROO.md file with:

  • Project overview
  • Table of contents
  • Technologies section grouped by type
  • Project structure visualization
  • Configuration files listing
  • Dependencies listing
  • Available scripts
  • Development setup instructions
  • Architecture patterns
  • Git information

• Added comprehensive unit tests for both modules

• Integrated with existing RooIgnore patterns for file filtering

Testing

• Unit tests added for both ProjectScanner and DocumentationGenerator
• All tests passing
• Manual testing can be done by typing /init in the chat

Example Output

The /init command generates a ROO.md file similar to:

# Project Name

Project description

## Project Overview

This document provides a comprehensive overview...

## Table of Contents

- [Technologies](#technologies)
- [Project Structure](#project-structure)
- [Configuration Files](#configuration-files)
- [Dependencies](#dependencies)
- [Available Scripts](#available-scripts)
- [Development Setup](#development-setup)
- [Architecture Patterns](#architecture-patterns)
- [Git Information](#git-information)

## Technologies

### Languages
- **Node.js** - Config: `package.json`
- **TypeScript** (^5.0.0)

### Frameworks
- **React** (^18.0.0)

...

Closes #6153

---

Important

Implements /init command to generate comprehensive project documentation in ROO.md using new ProjectScanner and DocumentationGenerator modules.

• Behavior:
  • Implements /init command in Task.ts to generate ROO.md documentation.
  • Scans project for structure, technologies, dependencies, scripts, and Git info.
  • Generates documentation with sections like project overview, technologies, and setup instructions.
• Modules:
  • Adds ProjectScanner to analyze project structure, technologies, dependencies, and more.
  • Adds DocumentationGenerator to create ROO.md with project details.
• Testing:
  • Adds unit tests for ProjectScanner and DocumentationGenerator in __tests__ directories.
  • Tests cover project scanning, documentation generation, and output validation.
• Integration:
  • Integrates with RooIgnore for file filtering in ProjectScanner.

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[ellipsis-dev]

User-facing messages (e.g., '🔍 Scanning project structure and analyzing codebase...') should be wrapped with an i18n function to support localization.

^{This comment was generated because it violated a code review rule: irule_C0ez7Rji6ANcGkkX.}

[daniel-lxs]

This implementation seems limited to typescript and python projects, it would be better to implement something similar to https://github.com/yamadashy/repomix