Feature: Storage

[suesitran]

There are 2 types of storage in this app: Cloud storage and local storage.

Cloud storage

We'll use Firebase Cloud Firestore as our Cloud storage. The question now is to use Cloud Firestore directly, or wrap it with Cloud Run to easily change cloud storage later?

Local storage

use Hive

• Local storage Storage - Local storage #36
• Cloud storage Tech: Cloud Storage #39 cloud