initialize method
Initialize Firebase instances. Must be called before any other method.
Implementation
Future<void> initialize() async {
_firestore = FirebaseFirestore.instance;
_storage = config.customStorageBucket != null
? FirebaseStorage.instanceFor(bucket: config.customStorageBucket)
: FirebaseStorage.instance;
CloudLogger.info('FirebaseService ready. User: ${currentUser?.uid}');
}