Introduces a setup.py script for building YTSage on Windows using cx_Freeze. Supports building executables, MSI installers, and ZIP distributions, with detailed configuration for included/excluded packages, assets, and installer options.
Expanded build/README.md with detailed instructions for CI/CD and local builds, directory structure, build script options, output artifacts, requirements, troubleshooting, version management, and future enhancements for the YTSage build system.