Create LoginFlow For Facebook

[arn-the-long-beard]

Overview of feature 📝

We need to create the login_flow for https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow

Part 1 create the URL

• Build a struct that contains the base_url for login and the configuration
• Implementation with constructor to use a Config variable to load the config
• Added methods for builder pattern to users can add and update fields the way they need.
• Implementation for building the Url Login Dialog Url with token
• Implementation for getting the Url so the user can have it in the view() function i nseed

Part 2 get the reponse from facebook

• Implementation for extracting the url fragments and build the TokenReponse
• Implementation for Inspecting Access Tokens

Which problem is the feature or enhancement solving❓

We need to have Struct & impl for login flow

Documentation & Help ℹ️

[arn-the-long-beard]

Step 2 needs to be performed server to server. So we leave it for now.