logout method
Implementation
Future<bool?> logout() async {
var result = await FlutterMongoRealm.logout();
bool? loggedWithGoogle = await _googleLoginWrapper.isLogged;
if (loggedWithGoogle == true) await _googleLoginWrapper.handleSignOut();
// bool loggedWithFacebook = await _facebookLoginWrapper.isLogged;
// if (loggedWithFacebook)
// await _facebookLoginWrapper.handleSignOut();
return result;
}