This change updates the dependencies of the Cargo.toml file on Windows to include additional features from the `windows-sys` crate. The `CreateProcess flags like CREATE_NEW_PROCESS_GROUP` feature is now enabled to allow for proper process management.
The code now properly sends Ctrl+C to the llama process on Windows, and also includes error handling for when the Ctrl+C command fails. Additionally, it now uses the `Windows` API to kill the process when it times out, and properly handles the wait for the process to exit.