Update documentation and add Hemlock version detection

[nbeerbower]

Summary

This PR updates the documentation build system to automatically detect and include the Hemlock library version from its source headers, along with regenerating all documentation files across multiple languages.

Key Changes

• Added Hemlock version detection: Implemented get_hemlock_version() function in build_docs.py to read version information from the Hemlock submodule's version.h header file
• Regenerated documentation: Updated all documentation files (HTML and text formats) across 9 languages:
  • English, Chinese, Portuguese, Spanish, German, Russian, French, Japanese, and Italian
  • Both .html and .txt variants updated with minor content changes

Implementation Details

• The new get_hemlock_version() function reads from HEMLOCK_DIR/include/version.h to dynamically retrieve version information
• Includes error handling to gracefully return an empty string if the version file cannot be read
• Documentation regeneration appears to be a result of the build system changes, with consistent line count adjustments across all language variants

https://claude.ai/code/session_012h1MMx5PiVTimKrJwgzhZV