uploadOnCollectionLevel method
upload will be different types... upload to a collection level
Implementation
Future <void> uploadOnCollectionLevel(String collectionPath,
Map<String, dynamic> payload) async {
Constants.fireStoreInstance.collection(collectionPath).doc().set(payload)
.then((value) => null).onError((error, stackTrace) => null)
.timeout(const Duration(seconds: 30));
}