Add repo CLI tool with analysis and test coverage features

[AtlantisPleb]

This PR adds a new repo CLI tool that provides repository analysis, test coverage analysis, and GitHub integration.

Major Features Added

1. Repository Analysis CLI Tool

• New repo binary for repository analysis
• Clones target repository into temp directory
• Generates repository map using tree-sitter
• Analyzes repository structure and content
• Cleans up temp directories automatically

2. Test Coverage Analysis (--test flag)

• Analyzes test coverage using DeepSeek
• Generates test suggestions for uncovered functionality
• Provides complete test implementations
• Posts recommendations as GitHub comments
• Features colored streaming output for reasoning and results

3. GitHub Integration

• Fetches and analyzes GitHub issues
• Posts analysis results as comments
• Integrates with DeepSeek for intelligent analysis
• Handles GitHub tokens and authentication

Implementation Details

Repository Analysis

• Uses tree-sitter for Rust code parsing
• Generates detailed repository maps
• Analyzes code structure and patterns
• Supports multiple file types (Rust, HTML, CSS, JS)

Test Coverage Features

• Streaming output for analysis phases
• Complete test implementation generation:
  • Necessary imports
  • Test module setup
  • Test fixtures and mocks
  • Multiple test cases
  • Edge case handling

Environment Management

• Secure temporary directory handling
• Automatic cleanup
• Environment variable management
• Error handling and recovery

Usage

Basic repository analysis:

cargo run --bin repo

Test coverage analysis:

cargo run --bin repo -- --test

Changes

• Added src/bin/repo.rs - Main CLI implementation
• Added src/repomap.rs - Repository mapping functionality
• Modified src/server/services/github_issue.rs - GitHub integration
• Added test coverage analysis features
• Added colored output handling
• Added GitHub comment integration
• Improved prompts for analysis

Testing

The features have been tested with:

• Repository structure analysis
• Test coverage analysis
• Test implementation generation
• GitHub issue integration
• Comment posting
• Streaming output display
• Temporary directory management

Dependencies Added

• clap - CLI argument parsing
• tree-sitter - Code parsing
• termcolor - Colored output
• git2 - Repository operations

Closes #592