Ability to isolate auth implementations with the rest of the app

[tuanngominh]

The switch of authentication implementations like firebase auth, in-house auth. When the switch happens components aren't get affected.

Solution:

• Build boundary between components and auth implementation. Components will only depend on interfaces which support event like login/logout, state like isAuth and currentUser

[tuanngominh]

https://netflixtechblog.com/ready-for-changes-with-hexagonal-architecture-b315ec967749