Gitingest Code Refactoring and Structure Improvements

This PR performs a comprehensive refactoring of the Gitingest codebase to improve maintainability, organization, and performance:

Key Changes

• Reorganized the codebase into a more modular structure:

  • Split monolithic query_ingestion.py into smaller dedicated modules
  • Created a new utils package for shared functionality
  • Added new filesystem_schema.py with proper data classes

• Improved code architecture:

  • Implemented proper OOP patterns with dedicated classes
  • Established clear module boundaries and responsibilities
  • Renamed modules and functions for better clarity:
    • query_parser.py → query_parsing.py
    • repository_clone.py → cloning.py
    • run_ingest_query → ingest_query

• Enhanced functionality:

  • Added blob-specific cloning support
  • Fixed file encoding detection with better fallbacks
  • Added better detection for textual vs binary files

• Quality improvements:

  • Standardized error handling across modules
  • Fixed variable naming conventions (e.g., e → exc)
  • Added proper return type hints and docstrings

Smaller Changes

• Added digest.txt to the default .gitignore
• Renamed OUTPUT_FILE_PATH to OUTPUT_FILE_NAME for clarity
• Fixed some Node/JavaScript references in comments
• Improved error messages and warnings
• Added chardet to dependencies
• Bumped version from 0.1.3 to 0.1.4

Thanks @filipchristiansen