Move shopping list to firebase

[milkowska]

• Move shopping list functionality to be stored in a private collection for each user instead of in a local database

[milkowska]

I've decided to change the way I store my shopping lists to make them more secure and efficient for users. Initially, I used a local database using SQLite, but I realized that this method would not guarantee privacy for other users who might log onto the same device. So, I decided to switch to using Firebase to create private shopping lists that are stored in the cloud. This way, each user's shopping list is secure and private, and can be accessed from anywhere with an internet connection.

[milkowska]

changed home screen to display the shopping list feature in more convenient way:

[milkowska]