Add wiki documentation generator and GitHub Actions workflow

- Create Python-based doc generator (.github/scripts/generate-wiki-docs.py)
  that parses Java source files and generates markdown wiki pages
- Create GitHub Actions workflow (.github/workflows/wiki-publish.yml)
  that runs the generator and publishes to GitHub wiki
- Update .gitignore to exclude generated wiki output

Co-authored-by: mercyblitz <533114+mercyblitz@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsphere-projects/microsphere-java/sessions/7650185e-b104-4ff0-9746-890b795ffe8c

Author: Copilot