[Integrate] As a user, I can sign out

[nkhanh44]

Why

• As users can sign in, the app must have an option for users to sign out. Signing out should completely remove any account-related footprints of the user.

Acceptance Criteria

• When a user confirms to log out, perform the Logout request.
  • If the request is successful
    • Navigate the user to Sign In
    • Remove any account-related stored data, such as credentials or user profile info.
  • Otherwise, display the error message on a native modal dialog with an OK button.
• When a user selects Cancel, do nothing.
• Unit tests for this feature all passed.

Design