Feature/auth UI screens

Description

Adds the main UI screens and functionality to login, sign up and logout.

Adds the login screen
- Unable to login with Google
- Reset password button is NOT implemented
Adds the sign up screen (email and password)
Adds a global toolbar which has the user's profile image
- If you click on it, you'll be taken to the ProfileView
Adds the profile view screen. From there you can:
1. Logout
2. Upload/update your profile image (this functionality is not actually working, images are only updated locally)
Adds a shared component to display profile images in a round container