Command-line arguments are not parsed in `Service::query_config`

`ServiceConfig::executable_path` (a `PathBuf`) is just a copy of `lpBinaryPathName` from `QUERY_SERVICE_CONFIGW`. It would make sense to [parse](https://docs.microsoft.com/en-us/windows/win32/api/shellapi/nf-shellapi-commandlinetoargvw) `lpBinaryPathName` first, as it may contain arguments.