#26 upload img to firebase storage

 allow read, write;

 //Global variable
   String? imgName;
     
// Upload image to firebase storage
  final storageRef = FirebaseStorage.instance.ref(imgName);
  await storageRef.putFile(imgPath!);   
      
// Get img url
   String url = await storageRef.getDownloadURL();
   
// Store img url in firestore[database]
   CollectionReference users = FirebaseFirestore.instance.collection('userSSS');
   users.doc(credential!.uid).set({"imgURL": url,});
//====OR====
   users.doc(credential!.uid).update({"imgURL": url,});