Social Login with Laravel Socialite

Social login improves user experience.

  ## OAuth flow
  
  ```mermaid
  flowchart LR
    A[Click Login] --> B[Redirect to Provider]
    B --> C[User Approves]
    C --> D[Callback to Laravel]
    D --> E[Create/Login User]
  ```
  
  Socialite handles the heavy lifting.
  
  In the next tutorial, we will export reports to Excel and CSV.