launch function
Implementation
Future<void> launch(String url) async {
Show.action("OPENING", "BROWSER", "FOR", "AUTHENTICATION");
if (Platform.isWindows) {
await Process.run("start", [url], runInShell: true);
} else if (Platform.isMacOS) {
await Process.run('open', [url]);
} else if (Platform.isLinux) {
await Process.run('xdg-open', [url]);
}
}