go implementation to get access token for oak from scoop auth

scoop-oauth.go

// https://github.com/nytimes/nodetools/blob/main/scoop/auth.js#L15C1-L37C3
func getToken() (string, error) {
	conf := &oauth2.Config{
		ClientID: "interactive",
		Endpoint: oauth2.Endpoint{
			TokenURL: tokenURL,
			AuthURL:  authURL,
		},
	}
	token, err := conf.PasswordCredentialsToken(context.Background(), username, password)
	if err != nil {
		return "", err
	}
	return token.AccessToken, nil
}