feat: Facebook Login

Description

Facebook Login (Week 3):

• Add Facebook SDK
• Wrap UIKit Facebook-Button in SwiftUI
• Update Readme with Facebook SDK details
• Add Facebook-Button in Login View
• Modify Facebook SDK GraphQL parameters
• Change/Modify APIService to include Facebook Login
• Add API calls using Semaphore

UI Changes

myVV

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Unit Test

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes