auto-round

9446bf15 - Add Google-style docstrings to auto_round/data_type/ modules

Add Google-style docstrings to auto_round/data_type/ modules Improve STE function docstrings in utils.py to use proper Google-style format with typed Args and Returns sections. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>