Support newer python version

[XavierTolza]

Closes #2

Summary

This PR fixes all failing pytest tests by addressing Python 3.12 compatibility issues with the deprecated PyInquirer library and migrating to the modern inquirer library.

Problem

The tests were failing due to compatibility issues between PyInquirer and Python 3.12+:

• ImportError: cannot import name 'Mapping' from 'collections'
• PyInquirer is deprecated and no longer maintained
• The collections.Mapping was moved to collections.abc.Mapping in Python 3.10+

Solution

🔄 Library Migration

• Replaced PyInquirer with inquirer (actively maintained alternative)
• Updated requirements.txt to use the new dependency
• Refactored all prompt code to use the new inquirer API

🧪 Test Fixes

• Updated all test mocks to use inquirer.prompt instead of the old prompt function
• Fixed BadCredentialsException constructor calls with proper status codes
• Improved error handling and user cancellation scenarios
• Enhanced code formatting and line length compliance

🛡️ Robustness Improvements

• Added proper handling for user cancellation (Ctrl+C)
• Improved token input validation and retry logic
• Enhanced error messages and user feedback
• Added safety checks for empty repository lists

Changes Made

Core Application (repo_deleter.py)

• Migrated from PyInquirer.prompt to inquirer.Checkbox and inquirer.List
• Improved token acquisition logic with better error handling
• Enhanced user experience with clearer prompts and messages
• Added safety checks for edge cases (empty repos, user cancellation)

Dependencies (requirements.txt)

PyGithub
- PyInquirer
+ inquirer

Test Suite Updates

• test_cli.py: Updated all mocks to use new inquirer API
• test_repo_listing.py: Fixed constructor calls and improved test reliability
• Code Quality: Improved formatting and lint compliance across all test files

Additional Improvements

• .gitignore: Enhanced to ignore more Python artifacts
• Error Handling: Better handling of network errors and authentication failures
• User Experience: Clearer messages and better prompt flow

Testing

✅ All tests now pass:

13 passed, 1 skipped in 0.99s

The skipped test (test_github_api_connection) requires a GITHUB_TOKEN environment variable and is correctly skipped when not available.

Test Coverage

• ✅ CLI functionality and console script availability
• ✅ Module execution and import safety
• ✅ Token handling from environment variables and user input
• ✅ Repository listing and filtering (admin permissions only)
• ✅ Error handling for bad credentials and network issues
• ✅ User interaction flows and cancellation scenarios

Compatibility

• ✅ Python 3.12+ compatibility restored
• ✅ Backward compatible with existing functionality
• ✅ Modern dependencies with active maintenance
• ✅ Same CLI interface and user experience

Risk Assessment

• Low Risk: Library migration maintains same functionality with modern, maintained dependencies
• Improved Reliability: Better error handling and user experience
• Future-Proof: Uses actively maintained libraries compatible with current Python versions

How to Test

1. Install dependencies: pip install -r requirements.txt
2. Run tests: python -m pytest tests/ -v
3. Test CLI: python -m github_repo_deleter.repo_deleter --help
4. Optional: Set GITHUB_TOKEN env var for integration tests

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Fixes: All pytest test failures
Type: Bug Fix, Dependency Update
Breaking Changes: None (same public API)