Run Milvus 2.0 on Windows

What this post added

This post provides detailed instructions for compiling Milvus 2.0 from source code on Windows, including prerequisites like MinGW64/MSYS toolchain, cloning the `windows-dev` branch, installing dependencies via `scripts/install_deps_msys.sh`, and compiling using `make` and `scripts/package_windows.sh`. It also outlines the process of installing from a pre-compiled binary package, which involves unzipping the package, starting MinIO and etcd services, and then starting the Milvus service.